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Your search keyword '"Sun, Jingxin"' showing total 141 results
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141 results on '"Sun, Jingxin"'

1. Determination of dynamical quantum phase transition for boson systems using the Loschmidt cumulants method

Author

Zhao, Pengju, Sun, Jingxin, Jin, Shengjie, Hu, Zhongshu, Li, Dingping, Liu, Xiong-Jun, and Chen, Xuzong

Subjects
Condensed Matter - Quantum Gases
Abstract

We study the dynamical quantum phase transition(DQPT) of the Bose-Hubbard model utilizing recently developed Loschmidt cumulants method. We determine the complex Loschmidt zeros of the Loschmidt amplitude analogous to the Lee-Yang zeros of the thermal partition function. We obtain the DQPT critical points through identifying the crossing points with the imaginary axis. The critical points show high accuracy when compared to those obtained using the matrix product states method. In addition, we show that how the critical points of DQPT can be determined by analyzing the energy fluctuation of the initial state, making it a valuable tool for future studies in this area. Finally, DQPT in the extended Bose-Hubbaed model is also investigated.

Published
2023

2. Experimental study on ultrasound-based underground pretreatment of mine water well

Author

LI Ang, LÜ Luna, LÜ Wei, TIAN Shengqi, FAN Liuyi, SUN Jingxin, FENG Biye, YANG Jiakang, and XUE Zhixuan

Subjects
water resource reuse, ultrasonic atomization, pre-softening treatment, mine water clarification, Engineering geology. Rock mechanics. Soil mechanics. Underground construction, TA703-712, Mining engineering. Metallurgy, TN1-997
Abstract

The conventional pretreatment methods for mine water generally include coagulation, sedimentation (flotation), and filtration. However, large equipment footprint, long processing time and pollution from coagulants and flocculants have been limiting the further development of underground mine water treatment. In this light, we designed an underground mine water pretreatment device based on ultrasonic atomization for clarifying and pre-softening mine water so that the turbid mine water could be treated to meet the needs of underground production, firefighting, and dust reduction. We conducted indoor experiments on mine water clarification and pre-softening treatment using water and rock samples from the field mined-out area. The results show that: (1) This method can clarify black-gray turbid mine water with a large amount of solid impurities, effectively removing insoluble solid impurities in the water. (2) Ultrasonic atomization reduces the total hardness of the water by 72.24%. The milligram equivalent concentration of Ca2+ is reduced from 5.33 mg/L to 0.81 mg/L and the milligram equivalent concentration of Mg2+ drops from 5.23 mg/L to 2.13 mg/L, with little impact on pH. (3) The water from the mined-out area after ultrasonic atomization can meet the requirements of sprinkling in underground firefighting, spraying in dust reduction, the mining process of coal mining equipment, and the use of cooling water.

Published
2024
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3. Observation of 2D Mott insulator and $\pi$-superfluid quantum phase transition in shaking optical lattice

Author

Sun, Jingxin, Zhao, Pengju, Hu, Zhongshu, Jin, Shengjie, Liao, Ren, Liu, Xiong-Jun, and Chen, Xuzong

Subjects
Condensed Matter - Quantum Gases, Physics - Atomic Physics
Abstract

The Mott insulator and superfluid phase transition is one of the most prominent phenomena in ultracold atoms. In this work, we report the observation of a novel 2D quantum phase transition between Mott insulator and $\pi$ superfluid in a shaking optical lattice. In the deep optical lattice regime, the lowest $s$-band can be tuned to Mott phase, while the higher $p_{x,y}$ bands are itinerant for having larger bandwidth. Through a shaking technique coupling the $s$ orbital to $p_{x,y}$ orbital states, we experimentally observe the transition between the states of the $s$ and $p_{x,y}$ bands, leading to a quantum phase transition from 2D $s$-orbital Mott phase to the $p_{x,y}$-orbital superfluid which condensed at $(\pi,\pi)$ momentum.

Published
2023

26. Hormone Receptor-Positive Breast Cancer

Author

Sanchez, Katherine, primary, Collins, Jennifer, additional, Yarlagadda, Sudha, additional, Sun, Jingxin, additional, Premji, Sarah, additional, Shafaee, Maryam Nemati, additional, and Nangia, Julie, additional

Published
2022
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29. Oxidative mechanism of chicken wooden breast myofibrillar protein

Author

Wang, Ke, Zhang, Yimin, and Sun, Jingxin

Abstract

To explore the oxidation mechanism of wooden breast myofibrillar protein (WBMP), oxidative breast MP (OBMP) was obtained from different doses (3, 10, and 20 mmol/L) of H2O2oxidized normal breast MP (NBMP). The results showed that the Zeta-potential, particle size, solubility, sulfhydryl, and carbonyl contents of OBMP-3 (3 mmol/L, low-dose free radicals) and WBMP were similar. Fluorescence spectrum analysis showed that the oxidation of low-dose free radicals led to a significant increase in the surface hydrophobicity (from 214.03 ± 10.03 to 393.50 ± 10.33) and tryptophan fluorescence intensity (from 185.71 to 568.32). In addition, the α-helix content of WBMP decreased significantly from (37.46 ± 1.15)% (NBMP) to (34.70 ± 2.04)%, while β-sheet and random coil contents increased significantly (P< 0.05) from (14.37 ± 0.69)% and (22.24 ± 0.78)% (NBMP) to (17.70 ± 0.87)% and (25.20 ± 1.47)% (WBMP). In summary, low-dose free radical oxidation attacks protein groups, inducing secondary and tertiary structural changes, leading to the formation of WBMP. This work will provide a theoretical basis at the molecular level for exploring the mechanism of functional degradation of WBMP.

Published
2024
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