91 results on '"De-Cheng Zou"'
Search Results
2. Analytical Approximations to Charged Black Hole Solutions in Einstein–Maxwell–Weyl Gravity
- Author
-
Sheng-Yuan Li, Ming Zhang, De-Cheng Zou, and Meng-Yun Lai
- Subjects
modified gravity ,black holes ,analytical approximate solutions ,homotopy analysis method ,Elementary particle physics ,QC793-793.5 - Abstract
The homotopy analysis method (HAM) is a useful method to derive analytical approximate solutions of black holes in modified gravity theories. In this paper, we study the Einstein–Weyl gravity coupled with Maxwell field and obtain analytical approximation solutions for charged black holes by using the HAM. It is found that the analytical approximate solutions are sufficiently accurate in the entire spacetime outside the black hole’s event horizon and also consistent with numerical ones for charged black holes in the Einstein–Maxwell–Weyl gravity.
- Published
- 2023
- Full Text
- View/download PDF
3. P − V criticality and Joule-Thomson expansion of Hayward-AdS black holes in 4D Einstein-Gauss-Bonnet gravity
- Author
-
Ming Zhang, Chao-Ming Zhang, De-Cheng Zou, and Rui-Hong Yue
- Subjects
Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
In this paper, the P−V criticality and Joule-Thomson Expansion of Hayward-AdS black holes in 4D Einstein-Gauss-Bonnet gravity are studied in the extended phase space. We find the black hole always exhibits a phase transition similar to that of the Van der Waals system for any arbitrary positive parameters α and g. We also study the dependence of α and g on the inversion curves and plot the inversion and isenthalpic curves in the T−P plane, which can determine the cooling-heating regions.
- Published
- 2021
- Full Text
- View/download PDF
4. Analytical Approximate Solutions for Scalarized AdS Black Holes
- Author
-
De-Cheng Zou, Bo Meng, Ming Zhang, Sheng-Yuan Li, Meng-Yun Lai, and Yun Soo Myung
- Subjects
black holes ,analytical approximate solutions ,numerical solutions ,ESGB gravity ,Elementary particle physics ,QC793-793.5 - Abstract
The spontaneous scalarization of Schwarzscild-AdS is investigated in the Einstein-scalar-Gauss–Bonnet (ESGB) theory. Firstly, we construct scalarized AdS black holes numerically. Secondly, making use of the homotopy analysis method (HAM), we obtain analytical approximate solutions for scalarized AdS black holes in the ESGB theory. It is found that scalarized AdS black holes constructed numerically are consistent with analytical approximate solutions in the whole space.
- Published
- 2022
- Full Text
- View/download PDF
5. Rotating scalarized black holes in scalar couplings to two topological terms
- Author
-
De-Cheng Zou and Yun Soo Myung
- Subjects
Physics ,QC1-999 - Abstract
The tachyonic instability of the Kerr black holes is analyzed in the Einstein-scalar theory with the quadratic scalar couplings to two topological terms which are parity-even Gauss-Bonnet and parity-odd Chern-Simons terms. For positive coupling α, we use the (2+1)-dimensional hyperboloidal foliation method to derive the threshold curve which is the boundary between stable and unstable Kerr black holes by considering a spherically symmetric scalar-mode perturbation. In case of negative coupling, a newly bound of a≥0.26 with a the rotation parameter is found for unstable Kerr black holes and its threshold curve is derived.
- Published
- 2021
- Full Text
- View/download PDF
6. Stability of scalarized charged black holes in the Einstein–Maxwell–Scalar theory
- Author
-
Yun Soo Myung and De-Cheng Zou
- Subjects
Astrophysics ,QB460-466 ,Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
Abstract We analyze the stability of scalarized charged black holes in the Einstein–Maxwell–Scalar (EMS) theory with quadratic coupling. These black holes are labelled by the number of $$n=0,1,2,\ldots $$ n=0,1,2,… , where $$n=0$$ n=0 is called the fundamental black hole and $$n=1,2,\ldots $$ n=1,2,… denote the n-excited black holes. We show that the $$n=0$$ n=0 black hole is stable against full perturbations, whereas the $$n=1,2$$ n=1,2 excited black holes are unstable against the $$s(l=0)$$ s(l=0) -mode scalar perturbation. This is consistent with the EMS theory with exponential coupling, but it contrasts to the $$n=0$$ n=0 scalarized black hole in the Einstein–Gauss–Bonnet–Scalar theory with quadratic coupling. This implies that the endpoint of unstable Reissner-Nordström black holes with $$\alpha >8.019$$ α>8.019 is the $$n=0$$ n=0 black hole with the same q. Furthermore, we study the scalarized charged black holes in the EMS theory with scalar mass $$m^2_\phi =\alpha /\beta $$ mϕ2=α/β .
- Published
- 2019
- Full Text
- View/download PDF
7. Instability of Reissner–Nordström black hole in Einstein-Maxwell-scalar theory
- Author
-
Yun Soo Myung and De-Cheng Zou
- Subjects
Astrophysics ,QB460-466 ,Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
Abstract The scalarization of Reissner–Nordström black holes was recently proposed in the Einstein-Maxwell-scalar theory. Here, we show that the appearance of the scalarized Reissner–Nordström black hole is closely related to the Gregory-Laflamme instability of the Reissner–Nordström black hole without scalar hair.
- Published
- 2019
- Full Text
- View/download PDF
8. Quasinormal modes of scalarized black holes in the Einstein–Maxwell–Scalar theory
- Author
-
Yun Soo Myung and De-Cheng Zou
- Subjects
Physics ,QC1-999 - Abstract
We perform the stability analysis on scalarized charged black holes in the Einstein–Maxwell–Scalar (EMS) theory by computing quasinormal mode spectrum. It is noted that the appearance of these black holes with scalar hair is closely related to the instability of Reissner–Nordström black holes without scalar hair in the EMS theory. The scalarized charged black hole solutions are classified by the order number of n=0,1,2,⋯, where n=0 is called the fundamental branch and n=1,2,⋯ denote the n excited branches. Here, we show that the n=1,2 excited black holes are unstable against the s(l=0)-mode scalar perturbation, while the n=0 black hole is stable against all scalar–vector–tensor perturbations. This is consistent with other scalarized black holes without charge found in the Einstein–Scalar–Gauss–Bonnet theory.
- Published
- 2019
- Full Text
- View/download PDF
9. Onset of rotating scalarized black holes in Einstein-Chern-Simons-Scalar theory
- Author
-
Yun Soo Myung and De-Cheng Zou
- Subjects
Physics ,QC1-999 - Abstract
We perform the stability analysis of the Kerr black hole in the Einstein-Chern-Simons-Scalar theory with quadratic scalar coupling. For positive coupling parameter (α>0), we introduce the (2+1)-dimensional hyperboloidal foliation method to show that the Kerr black hole is unstable against scalar-mode perturbation. In case of α
- Published
- 2021
- Full Text
- View/download PDF
10. Scalarized charged black holes in the Einstein-Maxwell-Scalar theory with two U(1) fields
- Author
-
Yun Soo Myung and De-Cheng Zou
- Subjects
Physics ,QC1-999 - Abstract
We investigate scalarized charged black holes in the Einstein-Maxwell-Scalar theory with two U(1) fields inspired by the N=4 supergravity. From the onset of the spontaneous scalarization (tachyonic instability of Reissner-Nordström black hole), these black holes are classified by the number of n=0,1,2,⋯, where n=0 is called the fundamental black hole and n=1,2,⋯ denote the n-excited black holes. Adopting radial perturbations, we show that the n=0 black hole is stable against the s(l=0)-mode scalar perturbation, whereas the n=1,2 excited black holes are unstable. This implies that the n=0 black hole is considered as an endpoint of the Reissner-Nordström black hole.
- Published
- 2020
- Full Text
- View/download PDF
11. Triple points and phase diagrams of Born-Infeld AdS black holes in 4D Einstein-Gauss-Bonnet gravity
- Author
-
Chao-Ming Zhang, De-Cheng Zou, and Ming Zhang
- Subjects
Physics ,QC1-999 - Abstract
By treating the cosmological constant as a thermodynamic pressure, we investigate the thermodynamic behaviors of Born-Infeld AdS black hole in 4D Einstein-Gauss-Bonnet (EGB) gravity. The result shows that the Van der Waals like small/large black hole (SBH/LBH) phase transition always appears for any positive parameters α and β. Moreover, we observe a new phenomenon of small/intermediate/large black hole (SBH/IBH/LBH) phase transition with one tricritical and two critical points in the available parameter region for α and β. This behavior is reminiscent of the solid/liquid/gas phase transition.
- Published
- 2020
- Full Text
- View/download PDF
12. Scalar hairy black holes in Einstein-Maxwell-conformally coupled scalar theory
- Author
-
De-Cheng Zou and Yun Soo Myung
- Subjects
Physics ,QC1-999 - Abstract
We obtain scalar hairy black holes from Einstein-Maxwell-conformally coupled scalar (EMCS) theory with the scalar coupling parameter α to the Maxwell term. In case of α=0, the α=0 EMCS theory provides constant (charged) scalar hairy black hole and charged BBMB (Bocharova-Bronnikov-Melnikov-Bekenstein) black hole where the former is stable against full perturbations, while the latter remains unstable because it belongs to an extremal black hole. It is noted that for α≠0, the unstable Reissner-Nordström black holes without scalar hair imply infinite branches of n=0(α≥8.019),1(α≥40.84),2(α≥99.89),⋯ scalarized charged black holes. In addition, for α>0, we develop a single branch of scalarized charged black hole solutions inspired by the constant scalar hairy black hole. Finally, we obtain the numerical charged BBMB black hole solution from the α=0 EMCS theory.
- Published
- 2020
- Full Text
- View/download PDF
13. Charged black holes in the Einstein-Maxwell-Weyl gravity
- Author
-
Chao Wu, De-Cheng Zou, and Ming Zhang
- Subjects
Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
In this paper, charged asymptotically flat black hole solutions are numerically constructed in the Einstein-Maxwell-Weyl gravity. These solutions can be interpreted as generalizations of two different groups of non-charged asymptotically flat spacetimes: Schwarzschild black hole (SBH) and non-Schwarzschild black hole (NSBH) solutions. In addition, we discuss the thermodynamic properties of two groups of charged black holes in detail, and show that these obey the first law of thermodynamics of black hole.
- Published
- 2020
- Full Text
- View/download PDF
14. Critical Phenomena of Charged AdS Black Holes in Rastall Gravity
- Author
-
De-Cheng Zou, Ming Zhang, Chao Wu, and Rui-Hong Yue
- Subjects
Physics ,QC1-999 - Abstract
We construct analytical charged anti-de Sitter (AdS) black holes surrounded by perfect fluids in four dimensional Rastall gravity. Then, we discuss the thermodynamics and phase transitions of charged AdS black holes immersed in regular matter like dust and radiation, or exotic matter like quintessence, ΛCDM type, and phantom fields. Surrounded by phantom field, the charged AdS black hole demonstrates a new phenomenon of reentrant phase transition (RPT) when the parameters Q, Np, and ψ satisfy some certain condition, along with the usual small/large black hole (SBH/LBH) phase transition for the surrounding dust, radiation, quintessence, and cosmological constant fields.
- Published
- 2020
- Full Text
- View/download PDF
15. Phase Structure and Quasinormal Modes of AdS Black Holes in Rastall Theory
- Author
-
De-Cheng Zou, Ming Zhang, and Ruihong Yue
- Subjects
Physics ,QC1-999 - Abstract
We discuss the P−V criticality and phase transition in the extended phase space of anti-de Sitter(AdS) black holes in four-dimensional Rastall theory and recover the Van der Waals (VdW) analogy of small/large black hole (SBH/LBH) phase transition when the parameters ωs and ψ satisfy some certain conditions. Later, we further explore the quasinormal modes (QNMs) of massless scalar perturbations to probe the SBH/LBH phase transition. It is found that it can be detected near the critical point, where the slopes of the QNM frequencies change drastically in small and large black holes.
- Published
- 2020
- Full Text
- View/download PDF
16. Behavior of quasinormal modes and Van der Waals-like phase transition of charged AdS black holes in massive gravity
- Author
-
De-Cheng Zou, Yunqi Liu, and Ruihong Yue
- Subjects
Astrophysics ,QB460-466 ,Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
Abstract In this work, we utilize the quasinormal modes (QNMs) of a massless scalar perturbation to probe the Van der Waals-like small and large black holes (SBH/LBH) phase transition of charged topological Anti-de Sitter (AdS) black holes in four-dimensional massive gravity. We find that the signature of this SBH/LBH phase transition is detected in the isobaric as well as in the isothermal process. This further supports the idea that the QNMs can be an efficient tool to investigate the thermodynamical phase transition.
- Published
- 2017
- Full Text
- View/download PDF
17. Reentrant phase transitions of higher-dimensional AdS black holes in dRGT massive gravity
- Author
-
De-Cheng Zou, Ruihong Yue, and Ming Zhang
- Subjects
Black Hole ,Black Hole Solution ,Massive Gravity ,Charged Black Hole ,Holographic Entanglement Entropy ,Astrophysics ,QB460-466 ,Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
Abstract We study the P–V criticality and phase transition in the extended phase space of anti-de Sitter (AdS) black holes in higher-dimensional de Rham, Gabadadze and Tolley (dRGT) massive gravity, treating the cosmological constant as pressure and the corresponding conjugate quantity is interpreted as thermodynamic volume. Besides the usual small/large black hole phase transitions, the interesting thermodynamic phenomena of reentrant phase transitions (RPTs) are observed for black holes in all $$d\ge 6$$ d ≥ 6 -dimensional spacetime when the coupling coefficients $$c_i m^2$$ c i m 2 of massive potential satisfy some certain conditions.
- Published
- 2017
- Full Text
- View/download PDF
18. Reentrant Phase Transitions and Triple Points of Topological AdS Black Holes in Born-Infeld-Massive Gravity
- Author
-
Ming Zhang, De-Cheng Zou, and Rui-Hong Yue
- Subjects
Physics ,QC1-999 - Abstract
Motivated by recent developments of black hole thermodynamics in de Rham, Gabadadze, and Tolley (dRGT) massive gravity, we study the critical behaviors of topological Anti-de Sitter (AdS) black holes in the presence of Born-Infeld nonlinear electrodynamics. Here the cosmological constant appears as a dynamical pressure of the system and its corresponding conjugate quantity is interpreted as thermodynamic volume. This shows that, besides the Van der Waals-like SBH/LBH phase transitions, the so-called reentrant phase transition (RPT) appears in four-dimensional space-time when the coupling coefficients cim2 of massive potential and Born-Infeld parameter b satisfy some certain conditions. In addition, we also find the triple critical points and the small/intermediate/large black hole phase transitions for d=5.
- Published
- 2017
- Full Text
- View/download PDF
19. Narrative Review and Consensus Recommendations for the Use of Transnasal Humidified Rapid-Insufflation Ventilatory Exchange in Modified Electroconvulsive Therapy.
- Author
-
Can-Jin Deng, Sha Nie, Jian-Xin Mai, De-Cheng Zou, Wei Deng, Xiong Huang, Qin Xie, Wei Huang, Wei Jiang, Xing-Bing Huang, Yu-Tao Xiang, Wei Zheng, and Yu-Ping Ning
- Subjects
ELECTROCONVULSIVE therapy ,BEST practices ,PHYSICIANS - Abstract
Transnasal humidified rapid-insufflation ventilatory exchange (THRIVE) is a safe, effective, and novel technique that is currently being used in electroconvulsive therapy (ECT). This study aimed to summarize the clinical practices of THRIVE use in ECT to aid physicians and institutions in implementing the best practice guidelines for ECT. Thus, we reviewed the current literature and presented our consensus on the application of THRIVE in ECT in daily clinical practice. This consensus provides information regarding THRIVE use in ECT, including its safety, effectiveness, procedures, precautions, special case management, and application in special populations. Moreover, it guides the standardized use of THRIVE in ECT. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
20. Spin-charge induced spontaneous scalarization of Kerr-Newman black holes
- Author
-
Meng-Yun Lai, Yun Soo Myung, Rui-Hong Yue, and De-Cheng Zou
- Subjects
FOS: Physical sciences ,General Relativity and Quantum Cosmology (gr-qc) ,General Relativity and Quantum Cosmology - Abstract
We investigate the tachyonic instability of Kerr-Newman (KN) black holes in the Einstein-Maxwell-scalar (EMS) theory with a positive coupling parameter $\alpha$. This corresponds to exploring the onset of spontaneous scalarization for KN black holes. For this purpose, we use the hyperboloidal foliation method (HFM) to solve the linearized scalar equation numerically. We obtain a 3D graph [$\log_{10}\alpha(a,Q)$] which indicates the onset surface for spontaneous scalarization of KN black holes in the EMS theory. We find that there is no lower bound on the rotational parameter $a$, but its upper bound is given by $M^2-Q^2 \ge a^2$. Also, we confirm that the high rotation enhances spontaneous scalarization of KN black holes in the EMS theory., Comment: 21 pages, 6 figures, Version accepted for publication in PRD. arXiv admin note: text overlap with arXiv:2206.11587
- Published
- 2022
21. Spin-induced scalarization of Kerr-Newman black holes in Einstein-Maxwell-scalar theory
- Author
-
Meng-Yun Lai, Yun Soo Myung, Rui-Hong Yue, and De-Cheng Zou
- Subjects
General Relativity and Quantum Cosmology ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,General Relativity and Quantum Cosmology (gr-qc) - Abstract
In this paper, we consider the tachyonic instability of Kerr-Newman (KN) black holes in the Einstein-Maxwell-scalar (EMS) theory with nonminimal negative scalar coupling to Maxwell term, and then obtain a bound $(\frac{a}{r_+}\geq0.4142)$ for spin parameter $a$ of KN black hole in the limit of coupling constant $\alpha\rightarrow-\infty$ by using analytical method. In addition, we perform a $(2+1)$-dimensional time evolution of linearized scalar field perturbation on the KN black hole background by implementing the hyperboloidal foliation method numerically in the EMS theory. It recovers the \textit{spontaneous scalarization} phenomenon for KN black hole in some certain regions of the parameter spaces. We further plot corresponding threshold curves $\alpha(a)$ which describe a boundary between bald KN black holes and scalarized spinning black holes in the EMS theory., Comment: 23 pages, 6 figures
- Published
- 2022
22. Joule–Thomson expansion of Born–Infeld AdS black holes in consistent 4D Einstein–Gauss–Bonnet gravity
- Author
-
Chao-Ming Zhang, Ming Zhang, and De-Cheng Zou
- Subjects
Nuclear and High Energy Physics ,General Physics and Astronomy ,Astronomy and Astrophysics - Abstract
In this paper, the Joule–Thomson expansion of Born–Infeld AdS black holes in the consistent Aoki–Gorji–Mukohyama theory of 4D Einstein–Gauss–Bonnet gravity is studied in the extended phase space. We further analyze the effect of parameters [Formula: see text] and [Formula: see text] on the inversion curves and plot the inversion and isenthalpic curves in the [Formula: see text]–[Formula: see text] plane, which can determine the cooling–heating regions.
- Published
- 2022
23. P − V criticality and Joule-Thomson expansion of Hayward-AdS black holes in 4D Einstein-Gauss-Bonnet gravity
- Author
-
Rui-Hong Yue, Chao-Ming Zhang, Ming Zhang, and De-Cheng Zou
- Subjects
High Energy Physics - Theory ,Physics ,Nuclear and High Energy Physics ,Phase transition ,Gravity (chemistry) ,Isenthalpic process ,Plane (geometry) ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,QC770-798 ,Space (mathematics) ,symbols.namesake ,General Relativity and Quantum Cosmology ,High Energy Physics - Theory (hep-th) ,Gauss–Bonnet gravity ,Nuclear and particle physics. Atomic energy. Radioactivity ,symbols ,Einstein ,van der Waals force ,Mathematical physics - Abstract
In this paper, the $P-V$ criticality and Joule-Thomson Expansion of Hayward-AdS black holes in 4D Einstein-Gauss-Bonnet gravity are studied in the extended phase space. We find the black hole always exhibits a phase transition similar to that of the Van der Waals system for any arbitrary positive parameters $\alpha$ and $g$. We also study the dependence of $\alpha$ and $g$ on the inversion curves and plot the inversion and isenthalpic curves in the $T-P$ plane, which can determine the cooling-heating regions., Comment: arXiv admin note: text overlap with arXiv:2009.03096
- Published
- 2021
24. Quasinormal modes of scalarized black holes in the Einstein–Maxwell–Scalar theory
- Author
-
De-Cheng Zou and Yun Soo Myung
- Subjects
High Energy Physics - Theory ,Nuclear and High Energy Physics ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,Perturbation (astronomy) ,General Relativity and Quantum Cosmology (gr-qc) ,Order number ,Charged black hole ,Computer Science::Digital Libraries ,01 natural sciences ,Instability ,General Relativity and Quantum Cosmology ,symbols.namesake ,0103 physical sciences ,Quasinormal mode ,Einstein ,010306 general physics ,Mathematical physics ,Physics ,010308 nuclear & particles physics ,lcsh:QC1-999 ,Black hole ,High Energy Physics - Theory (hep-th) ,Excited state ,symbols ,lcsh:Physics - Abstract
We perform the stability analysis on scalarized charged black holes in the Einstein-Maxwell-Scalar (EMS) theory by computing quasinormal mode spectrum. It is noted that the appearance of these black holes with scalar hair is closely related to the instability of Reissner-Nordstr\"om black holes without scalar hair in the EMS theory. The scalarized black hole solutions are classified by the node number of $n=0,1,2,\cdots$, where $n=0$ is called the fundamental branch and $n=1,2,\cdots$ denote the $n$ excited branches. Here, we show that the $n=1,2$ excited black holes are unstable against against the $s(l=0)$-mode scalar perturbation, while the $n=0$ fundamental black hole is stable against all scalar-vector-tensor perturbations. This is consistent with other scalarized black holes without charge found in the Einstein-Scalar-Gauss-Bonnet theory., Comment: 19 pages, 12 figures, version to appear in PLB
- Published
- 2019
25. Onset of rotating scalarized black holes in Einstein-Chern-Simons-Scalar theory
- Author
-
De-Cheng Zou and Yun Soo Myung
- Subjects
High Energy Physics - Theory ,Nuclear and High Energy Physics ,Astrophysics::High Energy Astrophysical Phenomena ,Scalar (mathematics) ,Chern–Simons theory ,FOS: Physical sciences ,General Relativity and Quantum Cosmology (gr-qc) ,Rotation ,01 natural sciences ,General Relativity and Quantum Cosmology ,symbols.namesake ,Quadratic equation ,0103 physical sciences ,Einstein ,010306 general physics ,Mathematical physics ,Physics ,010308 nuclear & particles physics ,Foliation ,lcsh:QC1-999 ,High Energy Physics - Theory (hep-th) ,Rotating black hole ,Coupling parameter ,symbols ,lcsh:Physics - Abstract
We perform the stability analysis of the Kerr black hole in the Einstein-Chern-Simons-Scalar theory with quadratic scalar coupling. For positive coupling parameter ($\alpha>0$), we introduce the (2+1)-dimensional hyperboloidal foliation method to show that the Kerr black hole is unstable against scalar-mode perturbation. In case of $\alpha, Comment: 12 pages, 3 figures
- Published
- 2021
26. Scalarization of slowly rotating black holes
- Author
-
Yun Soo Myung and De-Cheng Zou
- Subjects
Physics ,High Energy Physics - Theory ,General Relativity and Quantum Cosmology ,High Energy Physics - Theory (hep-th) ,Space and Planetary Science ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,Astronomy and Astrophysics ,General Relativity and Quantum Cosmology (gr-qc) ,Astrophysics ,Mathematical Physics - Abstract
It is interesting to note that most black holes are born very slowly rotating. We investigate scalarization of slowly rotating black holes in the Einstein-scalar-Chern-Simons (EsCS) theory. In the slow rotation approximation, the CS term takes a linear form of rotation parameter $a$ which determines the tachyonic instability. The tachyonic instability for slowly rotating black holes represents the onset of spontaneous scalarization. It is shown that the slowly rotating black holes are unstable against a spherically symmetric scalar-mode perturbation for positive coupling $\alpha$, whereas these black holes are unstable for negative coupling without any $a$-bound., Comment: 12 pages, 3 figures
- Published
- 2021
27. Slowly rotating black holes and their scalarization
- Author
-
De-Cheng Zou and Yun Soo Myung
- Subjects
Physics ,High Energy Physics - Theory ,Astrophysics::High Energy Astrophysical Phenomena ,Scalar (mathematics) ,Time evolution ,Boundary (topology) ,FOS: Physical sciences ,General Relativity and Quantum Cosmology (gr-qc) ,Rotation ,Coupling (probability) ,Instability ,Foliation ,General Relativity and Quantum Cosmology ,High Energy Physics - Theory (hep-th) ,Schwarzschild metric ,Mathematical physics - Abstract
We study scalarization of slowly rotating black holes in the Einstein-scalar-Gauss-Bonnet (GB)-Chern-Simons (CS) theory. In the slow rotation approximation of $a\ll1$ with rotation parameter $a$, the GB term is given by a term for Schwarzschild black hole, whereas the CS term takes a linear term of $a$. The tachyonic instability for slowly rotating black holes represents the onset of spontaneous scalarization. We use the (2+1)-dimensional hyperboloidal foliation method to show the tachyonic instability for slowly rotating black holes by considering the time evolution of a spherically symmetric scalar mode. A threshold (existence) curve is obtained from the constant scalar modes under time evolution, which means the boundary between stable and unstable black holes. It is found that the slowly rotating black holes turn out to be unstable against a spherically symmetric scalar-mode propagation for positive coupling $\alpha$. However, we could not find tachyonic instability and any $a$-bound for scalarization for negative coupling $\alpha$., Comment: 16 pages, 4 figures. version to appear in PRD
- Published
- 2021
- Full Text
- View/download PDF
28. Radial perturbations of the scalarized black holes in Einstein-Maxwell-conformally coupled scalar theory
- Author
-
Yun Soo Myung and De-Cheng Zou
- Subjects
High Energy Physics - Theory ,Physics ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Scalar (mathematics) ,FOS: Physical sciences ,General Relativity and Quantum Cosmology (gr-qc) ,Charged black hole ,01 natural sciences ,General Relativity and Quantum Cosmology ,Exponential function ,Black hole ,symbols.namesake ,Quadratic equation ,High Energy Physics - Theory (hep-th) ,Coupling parameter ,Excited state ,0103 physical sciences ,symbols ,Einstein ,010306 general physics ,Mathematical physics - Abstract
We perform the stability analysis for the scalarized charged black holes obtained from Einstein-Maxwell-conformally coupled scalar (EMCS) theory by employing the radial perturbations. The targeting black holes include a single branch of scalarized charged black hole with the coupling parameter $\alpha>0$ inspired by the constant scalar hairy black hole as well as infinite branches of $n=0(\alpha \ge 8.019),1(\alpha \ge 40.84),2(\alpha \ge 99.89),\cdots$ scalarized charged black holes found through the spontaneous scalarization on the Reissner-Nordstr\"om black hole. It turns out that the black hole in the single branch and the $n = 0$ black hole are stable against radial perturbations, while the $n = 1, 2$ excited black holes are unstable in the EMCS theory with both quadratic and exponential couplings., Comment: 1+25 pages, 11 figures, stablity analysis corrected, version to appear in PRD
- Published
- 2020
29. Phase Structure and Quasinormal Modes of AdS Black Holes in Rastall Theory
- Author
-
Ming Zhang, Rui-Hong Yue, and De-Cheng Zou
- Subjects
Physics ,Nuclear and High Energy Physics ,Phase transition ,Article Subject ,QC1-999 ,Astrophysics::High Energy Astrophysical Phenomena ,Extended phase ,Black hole ,Massless particle ,symbols.namesake ,General Relativity and Quantum Cosmology ,Critical point (thermodynamics) ,Quantum mechanics ,symbols ,van der Waals force - Abstract
We discuss the P−V criticality and phase transition in the extended phase space of anti-de Sitter(AdS) black holes in four-dimensional Rastall theory and recover the Van der Waals (VdW) analogy of small/large black hole (SBH/LBH) phase transition when the parameters ωs and ψ satisfy some certain conditions. Later, we further explore the quasinormal modes (QNMs) of massless scalar perturbations to probe the SBH/LBH phase transition. It is found that it can be detected near the critical point, where the slopes of the QNM frequencies change drastically in small and large black holes.
- Published
- 2020
- Full Text
- View/download PDF
30. Black hole with primary scalar hair in Einstein-Weyl-Maxwell-conformal scalar theory
- Author
-
De-Cheng Zou and Yun Soo Myung
- Subjects
High Energy Physics - Theory ,Physics ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Scalar (mathematics) ,FOS: Physical sciences ,Conformal map ,General Relativity and Quantum Cosmology (gr-qc) ,01 natural sciences ,General Relativity and Quantum Cosmology ,symbols.namesake ,High Energy Physics - Theory (hep-th) ,Coupling parameter ,0103 physical sciences ,symbols ,Einstein ,010306 general physics ,Mathematical physics - Abstract
We obtain a newly charged BBMB (Bocharova-Bronnikov-Melnikov-Bekenstein) black hole solution from the Einstein-Weyl-Maxwell-conformal (conformally coupled) scalar theory with a positive Weyl coupling parameter $m^2_2$ numerically. This solution has a primary scalar hair, compared to a secondary scalar hair in the charged BBMB black hole solution. The limiting case of $m_2^2\to\infty$ leads to the series form of the charged BBMB black hole solution. However, for $m^2_2, 1+14 pages, 3 figures, version to appear in PRD
- Published
- 2020
- Full Text
- View/download PDF
31. Scalarized black holes in the Einstein-Maxwell-scalar theory with a quasi-topological term
- Author
-
Yun Soo Myung and De-Cheng Zou
- Subjects
High Energy Physics - Theory ,Physics ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Scalar (mathematics) ,Perturbation (astronomy) ,FOS: Physical sciences ,General Relativity and Quantum Cosmology (gr-qc) ,01 natural sciences ,Instability ,General Relativity and Quantum Cosmology ,Term (time) ,Exponential function ,Black hole ,symbols.namesake ,High Energy Physics - Theory (hep-th) ,0103 physical sciences ,symbols ,Einstein ,010306 general physics ,Mathematical physics - Abstract
We investigate the Einstein-Maxwell-scalar theory with a quasi-topological term. Considering exponential couplings to Maxwell term, quasi-topological term, and both terms, we obtain three sets of infinite scalarized charged black holes by taking into account tachyonic instability of dyonic Reissner-Nordstr\"{o}m black hole. Each set of infinite scalarized charged black holes is classified by the number of $n=0,1,2,\cdots$, where $n=0$ is called the fundamental black hole and $n=1,2,\cdots$ denote the $n$-excited black holes. All $n=0$ black holes are stable against the radial perturbation, while all $n=1,2$ black holes are unstable., Comment: 20 pages, 11 Figures, version to appear in PRD. arXiv admin note: text overlap with arXiv:2009.05193
- Published
- 2020
- Full Text
- View/download PDF
32. Phase transition and quasinormal modes for charged black holes in 4D Einstein-Gauss-Bonnet gravity *
- Author
-
Chao-Ming Zhang, Rui-Hong Yue, Ming Zhang, and De-Cheng Zou
- Subjects
High Energy Physics - Theory ,Physics ,Nuclear and High Energy Physics ,Phase transition ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Scalar (mathematics) ,FOS: Physical sciences ,Astronomy and Astrophysics ,Charge (physics) ,01 natural sciences ,Critical point (mathematics) ,Massless particle ,General Relativity and Quantum Cosmology ,symbols.namesake ,High Energy Physics - Theory (hep-th) ,Gauss–Bonnet theorem ,Gauss–Bonnet gravity ,Quantum mechanics ,0103 physical sciences ,symbols ,van der Waals force ,010306 general physics ,Instrumentation - Abstract
In four-dimensional Einstein-Gauss-Bonnet (EGB) gravity, we consider the thermodynamic and phase transitions of (charged) AdS black holes. For the negative GB coefficient , the system allows two physical critical points, corresponding to the reentrant phase transition, when the charge . For arbitrary , the system always leads to a van der Waals phase transition. We then study the quasinormal modes (QNMs) of massless scalar perturbations to probe the van der Waals-like phase transition between small and large black holes (SBH/LBH) for (charged) AdS black holes. We find that the signature of this SBH/LBH phase transition in the isobaric process can be detected since the slopes of the QNM frequencies change dramatically in small and large black holes near the critical point. The obtained results further support that QNMs can be a dynamic probe of thermodynamic properties in black holes.
- Published
- 2021
33. Stability of scalarized charged black holes in the Einstein–Maxwell–Scalar theory
- Author
-
De-Cheng Zou and Yun Soo Myung
- Subjects
High Energy Physics - Theory ,Physics and Astronomy (miscellaneous) ,Astrophysics::High Energy Astrophysical Phenomena ,Perturbation (astronomy) ,FOS: Physical sciences ,lcsh:Astrophysics ,General Relativity and Quantum Cosmology (gr-qc) ,01 natural sciences ,General Relativity and Quantum Cosmology ,symbols.namesake ,Quadratic equation ,0103 physical sciences ,lcsh:QB460-466 ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,Einstein ,010306 general physics ,Engineering (miscellaneous) ,Mathematical physics ,Physics ,010308 nuclear & particles physics ,Exponential function ,Black hole ,High Energy Physics - Theory (hep-th) ,Excited state ,symbols ,lcsh:QC770-798 - Abstract
We analyze the stability of scalarized charged black holes in the Einstein-Maxwell-Scalar (EMS) theory with quadratic coupling. These black holes are labelled by the number of $n=0,1,2,\cdots$, where $n=0$ is called the fundamental black hole and $n=1,2,\cdots$ denote the $n$-excited black holes. We show that the $n=0$ black hole is stable against full perturbations, whereas the $n=1,2$ excited black holes are unstable against the $s(l=0)$-mode scalar perturbation. This is consistent with the EMS theory with exponential coupling, but it contrasts to the $n=0$ scalarized black hole in the Einstein-Gauss-Bonnet-Scalar theory with quadratic coupling. This implies that the endpoint of unstable Reissner-Nordstr\"{o}m black holes with $\alpha>8.019$ is the $n=0$ black hole with the same $q$. Furthermore, we study the scalarized charged black holes in the EMS theory with scalar mass $m^2_\phi=\alpha/\beta$., Comment: 23 pages, 11 figures. arXiv admin note: text overlap with arXiv:1812.03604
- Published
- 2019
34. Black holes in new massive conformal gravity
- Author
-
Yun Soo Myung and De-Cheng Zou
- Subjects
High Energy Physics - Theory ,General Relativity and Quantum Cosmology ,High Energy Physics - Theory (hep-th) ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,General Relativity and Quantum Cosmology (gr-qc) ,Mathematics::Differential Geometry - Abstract
We investigate the black holes in the new massive conformal gravity which is not invariant under conformal transformations because of the presence of the Einstein-Hilbert term. First, we show that the small Schwarzschild black hole is unstable against the $s$-mode of linearized Ricci tensor by solving the Lichnerowicz-Ricci tensor equation. This instability induces the appearance of the non-BBMB (Bocharova-Bronnikov-Melnikov-Bekenstein) black hole that has both Ricci tensor and conformal scalar hair., 17 pages, 3 figures, title changed, version to appear in PRD
- Published
- 2019
35. Charged black holes in the Einstein-Maxwell-Weyl gravity
- Author
-
Ming Zhang, Chao Wu, and De-Cheng Zou
- Subjects
Physics ,Nuclear and High Energy Physics ,Gravity (chemistry) ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,General Relativity and Quantum Cosmology (gr-qc) ,01 natural sciences ,General Relativity and Quantum Cosmology ,Black hole ,symbols.namesake ,0103 physical sciences ,symbols ,Schwarzschild metric ,lcsh:QC770-798 ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,Einstein ,010306 general physics ,First law of thermodynamics ,Mathematical physics - Abstract
We construct charged asymptotically flat black hole solutions in Einstein-Maxwell-Weyl(EMW) gravity. These solutions can be interpreted as generalizations of two different groups: Schwarzschild black hole (SBH) and non-Schwarzschild black hole (NSBH) solutions. In addition, we discuss the thermodynamic properties of two groups of numerical solutions in detail, and show that they obey the first law of thermodynamics., new charged black hole solutions in EW gravity
- Published
- 2019
36. Black holes in Gauss-Bonnet and Chern-Simons-scalar theory
- Author
-
De-Cheng Zou and Yun Soo Myung
- Subjects
Physics ,High Energy Physics - Theory ,Mathematics::Operator Algebras ,Astrophysics::High Energy Astrophysical Phenomena ,Scalar (mathematics) ,Chern–Simons theory ,FOS: Physical sciences ,Astronomy and Astrophysics ,General Relativity and Quantum Cosmology (gr-qc) ,General Relativity and Quantum Cosmology ,Quadratic equation ,High Energy Physics - Theory (hep-th) ,Space and Planetary Science ,Gauss–Bonnet theorem ,Schwarzschild metric ,Mathematical Physics ,Mathematical physics - Abstract
We carry out the stability analysis of the Schwarzschild black hole in Gauss-Bonnet and Chern-Simons-scalar theory. Here, we introduce two quadratic scalar couplings ($\phi_1^2,\phi_2^2$) to Gauss-Bonnet and Chern-Simons terms, where the former term is parity-even, while the latter one is parity-odd. The perturbation equation for the scalar $\phi_1$ is the Klein-Gordon equation with an effective mass, while the perturbation equation for $\phi_2$ is coupled to the parity-odd metric perturbation, providing a system of two coupled equations. It turns out that the Schwarzschild black hole is unstable against $\phi_1$ perturbation, leading to scalarized black holes, while the black hole is stable against $\phi_2$ and metric perturbations, implying no scalarized black holes., Comment: 18 pages, 2 figures, version to appear in IJMPD
- Published
- 2019
37. Scalarized charged black holes with scalar mass term
- Author
-
Yun Soo Myung and De-Cheng Zou
- Subjects
High Energy Physics - Theory ,Physics ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Scalar (physics) ,FOS: Physical sciences ,General Relativity and Quantum Cosmology (gr-qc) ,Stability result ,01 natural sciences ,General Relativity and Quantum Cosmology ,Massless particle ,Black hole ,High Energy Physics - Theory (hep-th) ,0103 physical sciences ,010306 general physics ,Mass parameter ,Mathematical physics - Abstract
We study the scalarized charged black holes in the Einstein-Maxwell-Scalar (EMS) theory with scalar mass term. In this work, the scalar mass term is chosen to be $m^2_\phi=\alpha/\beta$, where $\alpha$ is a coupling parameter and $\beta$ is a mass-like parameter. It turns out that any scalarized charged black holes are not allowed for the case of $\beta \le 4.4$ with $q=0.7(M=0.5,Q=0.35)$ because this case implies the stable Reissner-Nodstr\"{o}m (RN) black holes. In the massless limit of $\beta\to \infty$, one recovers the case of the EMS theory. We note that the unstable RN black hole implies the appearance of scalarized charged black holes. The other unstable case of $\beta>4.4$ with $q=0.7$ allows us to obtain the $n=0,1,2,\cdots$ scalarized charged black holes for $\alpha(\beta)\ge \alpha_{\rm th}(\beta)$ where $\alpha_{\rm th}(\beta)$ represents the threshold of instability for the RN black hole. Furthermore, it is shown that the $n=0$ black hole is stable against radial perturbations, while the $n=1$ black hole is unstable. This stability result is independent of the mass parameter $\beta$., Comment: 18 pages, 8 figures, version to appear in PRD
- Published
- 2019
- Full Text
- View/download PDF
38. Quasinormal modes of charged black holes in Einstein-Maxwell-Weyl gravity *
- Author
-
Ming Zhang, Rui-Hong Yue, De-Cheng Zou, and Chao Wu
- Subjects
Physics ,Nuclear and High Energy Physics ,Computer Science::Information Retrieval ,Perturbation (astronomy) ,Astronomy and Astrophysics ,Black hole ,General Relativity and Quantum Cosmology ,symbols.namesake ,Nonlinear system ,Linear relationship ,Quantum electrodynamics ,symbols ,Einstein ,Instrumentation ,Scalar field - Abstract
We study quasinormal modes (QNMs) of charged black holes in the Einstein-Maxwell-Weyl (EMW) gravity by adopting the test scalar field perturbation. We find that the imaginary part of QNM frequencies is consistently negative for different angular parameters l, indicating that these modes always decay and are therefore stable. We do not observe a linear relationship between the QNM frequency ω and parameter p for these black holes, as their charge Q causes a nonlinear effect. We evaluate the massive scalar field perturbation in charged black holes and find that random long lived modes (i.e., quasiresonances) could exist in this spectrum.
- Published
- 2020
39. Black holes in the Einstein-Born-Infeld-Weyl gravity
- Author
-
Rui-Hong Yue, Ming Zhang, De-Cheng Zou, and Chao Wu
- Subjects
Physics ,symbols.namesake ,Gravity (chemistry) ,symbols ,General Physics and Astronomy ,Einstein ,Mathematical physics - Published
- 2020
40. Instability of Reissner-Nordstr\'{o}m black hole in Einstein-Maxwell-scalar theory
- Author
-
Yun Soo Myung and De-Cheng Zou
- Subjects
Physics ,High Energy Physics - Theory ,Physics and Astronomy (miscellaneous) ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Scalar (mathematics) ,lcsh:Astrophysics ,01 natural sciences ,Instability ,Physics::History of Physics ,General Relativity and Quantum Cosmology ,Black hole ,symbols.namesake ,High Energy Physics::Theory ,0103 physical sciences ,lcsh:QB460-466 ,symbols ,lcsh:QC770-798 ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,Einstein ,010306 general physics ,Engineering (miscellaneous) ,Mathematical physics - Abstract
The scalarization of Reissner-Nordstr\"{o}m black holes was recently proposed in the Einstein-Maxwell-scalar theory. Here, we show that the appearance of the scalarized Reissner-Nordstr\"{o}m black hole is closely related to the Gregory-Laflamme instability of the Reissner-Nordstr\"{o}m black hole without scalar hair., Comment: 22 pages, 10 figures, version to appear in EPJC
- Published
- 2018
41. Gregory-Laflamme instability of black hole in Einstein-scalar-Gauss-Bonnet theories
- Author
-
De-Cheng Zou and Yun Soo Myung
- Subjects
Physics ,High Energy Physics - Theory ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Scalar (mathematics) ,FOS: Physical sciences ,General Relativity and Quantum Cosmology (gr-qc) ,01 natural sciences ,Instability ,General Relativity and Quantum Cosmology ,Black hole ,Gravitation ,High Energy Physics::Theory ,High Energy Physics - Theory (hep-th) ,Gauss–Bonnet theorem ,0103 physical sciences ,Black string ,Schwarzschild metric ,Mathematics::Differential Geometry ,010306 general physics ,Schwarzschild radius ,Mathematical physics - Abstract
We investigate the stability analysis of Schwarzschild black hole in Einstein-scalar-Gauss-Bonnet (ESGB) theory because the instability of Schwarzschild black hole without scalar hair implies the Gauss-Bonnet black hole with scalar hair. The linearized scalar equation is compared to the Lichnerowicz-Ricci tensor equation in the Einstein-Weyl gravity. It turns out that the instability of Schwarzschild black hole in ESGB theory is interpreted as not the tachyonic instability, but the Gregory-Laflamme instability of black string. In the small mass regime of $1/\lambda, Comment: 14 pages, 4 figures, version to appear in Physical Review D
- Published
- 2018
42. Behavior of quasinormal modes and Van der Waals-like phase transition of charged AdS black holes in massive gravity
- Author
-
Rui-Hong Yue, De-Cheng Zou, and Yunqi Liu
- Subjects
Physics ,Phase transition ,Physics and Astronomy (miscellaneous) ,010308 nuclear & particles physics ,Perturbation (astronomy) ,FOS: Physical sciences ,lcsh:Astrophysics ,General Relativity and Quantum Cosmology (gr-qc) ,01 natural sciences ,General Relativity and Quantum Cosmology ,Isothermal process ,Massless particle ,symbols.namesake ,Massive gravity ,Quantum mechanics ,lcsh:QB460-466 ,0103 physical sciences ,symbols ,lcsh:QC770-798 ,Isobaric process ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,van der Waals force ,010306 general physics ,Engineering (miscellaneous) - Abstract
In this work, we utilize the quasinormal modes (QNMs) of a massless scalar perturbation to probe the Van der Waals-like small and large black holes (SBH/LBH) phase transition of charged topological Anti-de Sitter (AdS) black holes in four-dimensional massive gravity. We find that the signature of this SBH/LBH phase transition is detected in the isobaric as well as in the isothermal process.This further supports the idea that the QNMs can be an efficient tool to investigate the thermodynamical phase transition., Comment: 18 pages, V3: minor corrections
- Published
- 2017
43. $$(2+1)$$ ( 2 + 1 ) -Dimensional charged black holes with scalar hair in Einstein–Power–Maxwell Theory
- Author
-
De-Cheng Zou and Wei Xu
- Subjects
Physics ,Geodesics in general relativity ,Physics and Astronomy (miscellaneous) ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Horizon ,Scalar (mathematics) ,Curvature ,01 natural sciences ,Black hole ,Gravitation ,General Relativity and Quantum Cosmology ,Singularity ,0103 physical sciences ,010306 general physics ,Scalar field ,Mathematical physics - Abstract
In $$(2+1)$$ -dimensional AdS spacetime, we obtain new exact black hole solutions, including two different models (power parameter $$k=1$$ and $$k\ne 1$$ ), in the Einstein–Power–Maxwell (EPM) theory with nonminimally coupled scalar field. For the charged hairy black hole with $$k\ne 1$$ , we find that the solution contains a curvature singularity at the origin and is nonconformally flat. The horizon structures are identified, which indicates the physically acceptable lower bound of mass in according to the existence of black hole solutions. Later, the null geodesic equations for photon around this charged hairy black hole are also discussed in detail.
- Published
- 2017
44. Reentrant phase transitions of higher-dimensional AdS black holes in dRGT massive gravity
- Author
-
Ming Zhang, Ruihong Yue, and De-Cheng Zou
- Subjects
High Energy Physics - Theory ,Phase transition ,Physics and Astronomy (miscellaneous) ,Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,lcsh:Astrophysics ,General Relativity and Quantum Cosmology (gr-qc) ,Cosmological constant ,Holographic Entanglement Entropy ,Space (mathematics) ,01 natural sciences ,General Relativity and Quantum Cosmology ,Ruppeiner geometry ,lcsh:QB460-466 ,0103 physical sciences ,Black Hole Solution ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,010306 general physics ,Engineering (miscellaneous) ,Mathematical physics ,Physics ,Spacetime ,010308 nuclear & particles physics ,Charged Black Hole ,Black Hole ,Black hole ,Massive gravity ,High Energy Physics - Theory (hep-th) ,Phase space ,Massive Gravity ,lcsh:QC770-798 - Abstract
We study the $P-V$ criticality and phase transition in the extended phase space of anti-de Sitter (AdS) black holes in higher-dimensional de Rham, Gabadadze and Tolley (dRGT) massive gravity, treating the cosmological constant as pressure and the corresponding conjugate quantity is interpreted as thermodynamic volume. Besides the usual small/large black hole phase transitions, the interesting thermodynamic phenomena of reentrant phase transitions (RPTs) are observed for black holes in all $d\geq6$-dimensional spacetime when the coupling coefficients $c_i m^2$ of massive potential satisfy some certain conditions., Comment: 14 pages, several references are added, v2: published in EPJC
- Published
- 2017
45. Reentrant Phase Transitions and Triple Points of Topological AdS Black Holes in Born-Infeld-Massive Gravity
- Author
-
De-Cheng Zou, Ming Zhang, and Rui-Hong Yue
- Subjects
High Energy Physics - Theory ,Coupling ,Physics ,Nuclear and High Energy Physics ,Phase transition ,Article Subject ,010308 nuclear & particles physics ,FOS: Physical sciences ,Cosmological constant ,Topology ,01 natural sciences ,lcsh:QC1-999 ,Nonlinear system ,General Relativity and Quantum Cosmology ,Massive gravity ,Reentrancy ,High Energy Physics - Theory (hep-th) ,0103 physical sciences ,010306 general physics ,Black hole thermodynamics ,lcsh:Physics - Abstract
Motivated by recent developments of black hole thermodynamics in de Rham, Gabadadze and Tolley(dRGT) massive gravity, we study the critical behaviors of four-dimensional topological Anti-de Sitter(AdS) black holes in the presence of Born-Infeld nonlinear electrodynamics by treating the cosmological constant as pressure and the corresponding conjugate quantity is interpreted as thermodynamic volume. It shows that besides the Van der Waals-like SBH/LBH phase transitions appears, the so-called reentrant phase transitions (RPTs) are also observed when the coupling coefficients $c_i m^2$ of massive potential and Born-Infeld parameter $b$ satisfy some certain conditions., Comment: arXiv admin note: text overlap with arXiv:1612.08056; text overlap with arXiv:1402.2837, arXiv:1306.5756 by other author
- Published
- 2017
46. Viscosity/entropy ratio in the context of dRGT massive gravity
- Author
-
De-Cheng Zou and Bin Wu
- Subjects
Physics ,010308 nuclear & particles physics ,Graviton ,General Physics and Astronomy ,Dissipation ,01 natural sciences ,Entropy density ,Massive gravity ,Kubo formula ,0103 physical sciences ,Entropy (information theory) ,Diffeomorphism ,010306 general physics ,Scaling ,Mathematical physics - Abstract
In this paper, the ratio of shear viscosity to entropy density in the context of dRGT massive gravity is studied. The massive graviton breaks the diffeomorphism invariance in the bulk geometry so that the momentum dissipates in the boundary theory. The ratio is calculated numerically and analytically by using Kubo formula. It is shown that exhibits a non-trivial temperature dependence. We find that approaches to a constant value at high temperature, while it tends to zero with a scaling law at low temperature.
- Published
- 2018
47. P - V Criticality of Born-Infeld AdS Black Holes Surrounded by Quintessence
- Author
-
Chen-Hao Wu, Yue Wang, and De-Cheng Zou
- Subjects
Physics ,Physics and Astronomy (miscellaneous) ,010308 nuclear & particles physics ,Critical phenomena ,Cosmological constant ,01 natural sciences ,symbols.namesake ,Criticality ,Born–Infeld model ,Phase space ,0103 physical sciences ,Dark energy ,symbols ,van der Waals force ,010306 general physics ,Quintessence ,Mathematical physics - Published
- 2018
48. Thermodynamics of Third Order Lovelock Anti-de Sitter Black Holes Revisited
- Author
-
Zhan-Ying Yang, De-Cheng Zou, and Rui-Hong Yue
- Subjects
High Energy Physics - Theory ,Physics ,Gravity (chemistry) ,Physics and Astronomy (miscellaneous) ,Astrophysics::High Energy Astrophysical Phenomena ,Horizon ,FOS: Physical sciences ,General Relativity and Quantum Cosmology (gr-qc) ,Critical value ,Space (mathematics) ,Stability (probability) ,Conserved quantity ,General Relativity and Quantum Cosmology ,High Energy Physics - Theory (hep-th) ,Phase (matter) ,Anti-de Sitter space ,Mathematical physics - Abstract
We compute the mass and the temperature of third order Lovelock black holes with negative Gauss-Bonnet coefficient $\alpha_2, Comment: 15 pages, 22 figures
- Published
- 2011
49. Destroying a Near-Extremal Kerr-Newman-AdS Black Hole with Test Particles
- Author
-
Yu Song, Rui-Hong Yue, Ming Zhang, Cheng-Yi Sun, and De-Cheng Zou
- Subjects
Physics ,Physics and Astronomy (miscellaneous) ,010308 nuclear & particles physics ,Quantum mechanics ,0103 physical sciences ,010306 general physics ,01 natural sciences ,AdS black hole - Published
- 2018
50. Destroying MTZ black holes with test particles
- Author
-
Hao Tang, Cheng-Yi Sun, De-Cheng Zou, Yu Song, and Rui-Hong Yue
- Subjects
Physics ,Black hole ,Singularity ,Condensed matter physics ,010308 nuclear & particles physics ,0103 physical sciences ,General Physics and Astronomy ,010306 general physics ,01 natural sciences - Published
- 2018
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.