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1. Smartphone viewing distance and sleep: an experimental study utilizing motion capture technology

Author

Yoshimura M, Kitazawa M, Maeda Y, Mimura M, Tsubota K, and Kishimoto T

Subjects
smartphone, sleep, blue light, distance, Psychiatry, RC435-571, Neurophysiology and neuropsychology, QP351-495
Abstract

Michitaka Yoshimura,1,* Momoko Kitazawa,1–3,* Yasuhiro Maeda,2 Masaru Mimura,4 Kazuo Tsubota,1 Taishiro Kishimoto,4,5 1Department of Ophthalmology, Keio University School of Medicine, Tokyo, 2RIKEN Center for Advanced Photonics, Wako, Saitama, 3Department of Nursing, Aino University Junior College, 4Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan; 5Department of Psychiatry, Hofstra Northwell School of Medicine, NY, USA *These authors contributed equally to this work Abstract: There are studies reporting the negative impact of smartphone utilization on sleep. It is considered that reduction of melatonin secretion under the blue light exposure from smartphone displays is one of the causes. The viewing distance may cause sleep disturbance, because the viewing distance determines the screen illuminance and/or asthenopia. However, to date, there has been no study closely investigating the impact of viewing distance on sleep; therefore, we sought to determine the relationship between smartphone viewing distance and subjective sleep status. Twenty-three nursing students (mean age ± standard deviation of 19.7±3.1 years) participated in the study. Subjective sleep status was assessed using the Pittsburgh Sleep Quality Index, morningness–eveningness questionnaire, and the Epworth sleepiness scale. We used the distance between the head and the hand while holding a smartphone to measure the viewing distance while using smartphones in sitting and lying positions. The distance was calculated using the three-dimensional coordinates obtained by a noncontact motion-sensing device. The viewing distance of smartphones in the sitting position ranged from 13.3 to 32.9 cm among participants. In the lying position, it ranged from 9.9 to 21.3cm. The viewing distance was longer in the sitting position than in the lying position (mean ± standard deviation: 20.3±4.7 vs 16.4±2.7, respectively, P

Published
2017

2. Dynamics of critical fluctuations: Theory -- phenomenology -- heavy-ion collisions

Author

Bluhm, M., Nahrgang, M., Kalweit, A., Arslandok, M., Braun-Munzinger, P., Floerchinger, S., Fraga, E. S., Gazdzicki, M., Hartnack, C., Herold, C., Holzmann, R., Karpenko, Iu., Kitazawa, M., Koch, V., Leupold, S., Mazeliauskas, A., Mohanty, B., Ohlson, A., Oliinychenko, D., Pawlowski, J. M., Plumberg, C., Ridgway, G. W., Schäfer, T., Selyuzhenkov, I., Stachel, J., Stephanov, M., Teaney, D., Touroux, N., Vovchenko, V., and Wink, N.

Subjects
Nuclear Theory, High Energy Physics - Phenomenology, Nuclear Experiment
Abstract

This report summarizes the presentations and discussions during the Rapid Reaction Task Force "Dynamics of critical fluctuations: Theory -- phenomenology -- heavy-ion collisions", which was organized by the ExtreMe Matter Institute EMMI and held at GSI, Darmstadt, Germany in April 2019. We address the current understanding of the dynamics of critical fluctuations in QCD and their measurement in heavy-ion collision experiments. In addition, we outline what might be learned from studying correlations in other physical systems, such as cold atomic gases., Comment: 89 pages, 11 figures, report on an ExtreMe Matter Institute EMMI Rapid Reaction Task Force

Published
2020

3. Dynamics of critical fluctuations: Theory – phenomenology – heavy-ion collisions

Author

Bluhm, M, Kalweit, A, Nahrgang, M, Arslandok, M, Braun-Munzinger, P, Floerchinger, S, Fraga, ES, Gazdzicki, M, Hartnack, C, Herold, C, Holzmann, R, Karpenko, I, Kitazawa, M, Koch, V, Leupold, S, Mazeliauskas, A, Mohanty, B, Ohlson, A, Oliinychenko, D, Pawlowski, JM, Plumberg, C, Ridgway, GW, Schäfer, T, Selyuzhenkov, I, Stachel, J, Stephanov, M, Teaney, D, Touroux, N, Vovchenko, V, and Wink, N

Subjects
Fluctuations, Dynamics of critical fluctuations, QCD critical point, Heavy-Ion collisions, Cold atomic gases, nucl-th, hep-ph, nucl-ex, Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics
Abstract

This report summarizes the presentations and discussions during the Rapid Reaction Task Force “Dynamics of critical fluctuations: Theory – phenomenology – heavy-ion collisions”, which was organized by the ExtreMe Matter Institute EMMI and held at GSI, Darmstadt, Germany in April 2019. We address the current understanding of the dynamics of critical fluctuations in QCD and their measurement in heavy-ion collision experiments. In addition, we outline what might be learned from studying correlations in other physical systems, such as cold atomic gases.

Published
2020

4. Charmonium spectra and dispersion relation with improved Bayesian analysis in lattice QCD

Author

Ikeda, A., Asakawa, M., and Kitazawa, M.

Subjects
High Energy Physics - Lattice
Abstract

We study the charmonium spectral functions at finite momentum and the dispersion relation of $\eta_c$ at finite temperature. For the analysis of the spectral function, we use an extended maximum entropy method (MEM). We perform the MEM analysis for the product space of Euclidean correlators in different channels or momenta to incorporate information encoded in correlations among the Euclidean correlators in MEM. We find that this method can improve the error of the reconstructed spectral images. To study the dispersion relation, we introduce a definition of the peak position in the spectral image in which the associated error can be estimated on the basis of MEM. We find that the dispersion relation of $\eta_c$ at finite temperature follows the Lorentz invariant form even near the dissociation temperature $T\simeq1.7T_c$., Comment: 7 pages, 3 figures, talk presented at Lattice 2014. the 32nd International Symposium on Lattice Field Theory, 23-28 June, 2014, Columbia University New York, NY; PoS(LATTICE2014)215

Published
2014

6. How do chiral condensates affect color superconducting quark matter under charge neutrality constraints?

Author

Abuki, H., Kitazawa, M., and Kunihiro, T.

Subjects
High Energy Physics - Phenomenology, Condensed Matter - Superconductivity, Nuclear Theory
Abstract

We investigate the effects of the dynamical formation of the chiral condensates on color superconducting phases under the electric and color neutrality constraints at vanishing temperature. We shall show that the phase appearing next to the color-flavor-locked (CFL) phase down in density depends on the strength of the diquark coupling. In particular, the gapless CFL (gCFL) phase is realized only in a weak coupling regime. We give a qualitative argument on why the gCFL phase in the weak coupling region is replaced by some other phases in the strong coupling, once the competition between dynamical chiral symmetry breaking and the Cooper pair formation is taken into account., Comment: 7 pages, 5 figures, Fig.3 is added for a discussion on the disappearance of the gapless CFL

Published
2004
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7. Pseudogap of Color Superconductivity in Heated Quark Matter

Author

Kitazawa, M., Koide, T., Kunihiro, T., and Nemoto, Y.

Subjects
High Energy Physics - Phenomenology, Condensed Matter - Superconductivity, Nuclear Theory
Abstract

We show that the pseudogap of the quark density of states is formed in hot quark matter as a precursory phenomenon of the color superconductivity on the basis of a low-energy effective theory. We clarify that the decaying process of quarks near Fermi surface to a hole and the diquark soft mode (qq)_{soft} is responsible for the formation of the pseudogap. Our result suggests that the pseudogap is a universal phenomenon in strong coupling superconductors., Comment: Introduction is largely rewritten and minor changes are made in other parts of the text. Some referenes with comments are added. Numerical errors in the figures are corrected. To appear in Phys. Rev. D

Published
2003
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8. Effects of Vector Coupling on Chiral and Color-superconducting Phase Transitions -- interplay among the scalar, pairing and vector interaction --

Author

Kitazawa, M., Koide, T., Kunihiro, T., and Nemoto, Y.

Subjects
High Energy Physics - Phenomenology
Abstract

We investigate effects of the vector interaction appearing in chiral effective Lagrangians on the chiral and color superconducting (CSC) phase transitions using Nambu-Jona-Lasinio model. It is shown that the repulsive density-density interaction coming from the vector term enhances competition between the chiral symmerty breaking and CSC phase transition: When the vector coupling is increased, the first order transition between the chiral symmerty breaking and CSC phase becomes weaker, and the coexisting phase in which both the chiral and color-gauge symmetries are dynamically broken comes to exisit in a wider region in the T-\mu plane. We find that the critical line of the first order transition can have two endpoints for an intermediate range of the vector coupling., Comment: 4 pages, 6 figures, Talk presented at the XVIth International Conference on Particles and Nuclei (PANIC02), Osaka, Japan, Sep.30 - Oct.4, 2002, Uses espcrc1.sty

Published
2002
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9. Precursor of Color Superconductivity

Author

Kitazawa, M., Koide, T., Kunihiro, T., and Nemoto, Y.

Subjects
High Energy Physics - Phenomenology, Nuclear Theory
Abstract

We investigate possible precursory phenomena of color superconductivity at finite temperature $T$ with an effective theory of QCD. It is found that the fluctuation of the diquark pair field exists with a prominent strength even well above the critical temperature $T_c$. We show that such a fluctuaiton forms a collective mode, the corresponding pole of which approaches the origin as $T$ is lowered to $T_c$ in the complex energy plane. We discuss the possible relevance of the precursor to the observables to be detected in heavy-ion collisions., Comment: 4 pages, 5 figures, Talk presented at the XVIth International Conference on Particles and Nuclei (PANIC02), Osaka, Japan, Sep.30 - Oct.4, 2002, Uses espcrc1.sty

Published
2002
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10. Chiral and Color-superconducting Phase Transitions with Vector Interaction in a Simple Model

Author

Kitazawa, M., Koide, T., Kunihiro, T., and Nemoto, Y.

Subjects
High Energy Physics - Phenomenology, High Energy Physics - Lattice, Nuclear Theory
Abstract

We investigate effects of the vector interaction on chiral and color superconducting (CSC) phase transitions at finite density and temperature in a simple Nambu-Jona-Lasinio model. It is shown that the repulsive density-density interaction coming from the vector term, which is present in the effective chiral models but has been omitted, enhances the competition between the chiral symmerty breaking (chiSB) and CSC phase transition, and thereby makes the thermodynamic potential have a shallow minimum over a wide range of values of the correlated chiral and CSC order parameters. We find that when the vector coupling is increased, the first order transition between the chiSB and CSC phases becomes weaker, and the coexisting phase in which both the chiral and color-gauge symmetry are dynamically broken comes to exisit over a wider range of the density and temperature. We also show that there can exist two endpoints, which are tricritical points in the chiral limit, along the critical line of the first order transition in some range of values of the vector coupling. Although our analysis is based on a simple model, the nontrivial interplay between the chiSB and CSC phases induced by the vector interaction is expected to be a universal phenomenon and might give a clue to understanding results obtained with two-color QCD on the lattice., Comment: 27 pages, 27 eps figures. version to appear in Prog. Theor. Phys. Some references are added with comments on the coexistence phase. Brief discussions are also added on effects of the color-neutrality condition. A few misleading comments are corrected. Scales of Figs.10 and 12 are corrected

Published
2002
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11. Precursor of Color Superconductivity in Hot Quark Matter

Author

Kitazawa, M., Koide, T., Kunihiro, T., and Nemoto, Y.

Subjects
Nuclear Theory, Condensed Matter - Superconductivity, High Energy Physics - Phenomenology, Nuclear Experiment
Abstract

We investigate possible precursory phenomena of color superconductivity in quark matter at finite temperature T with use of a simple Nambu-Jona-Lasinio model. It is found that the fluctuating pair field exists with a prominent strength even well above the critical temperature T_c. We show that the collective pair field has a complex energy located in the second Riemann sheet, which approaches the origin as T is lowered to T_c. We discuss the possible relevance of the precursor to the observables to be detected in heavy ion collisions., Comment: 5 pages, 3 figures, version to appear in Phys. Rev. D. Discussions are enlarged on the physical origin of the large fluctuation of the pair field and its phenomenological consequences. References are added

Published
2001
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12. Corrections to Angular Ordering in Multiple Hadroprodroproduction

Author

Kimura, K., Kitazawa, M., and Tesima, K.

Subjects
High Energy Physics - Phenomenology
Abstract

One of the key ideas in describing the multiparticle production at high energies in the perturbative QCD is the angular ordering in successive soft-gluon emission. We analyse the angular distribution of particles in a jet, and investigate the corrections to the angular ordering. At a small angle from the jet direction, the angular ordering is exact at the next-to-leading order. At a large angle, the angular ordering overestimates the angular particle density by a factor $(1-\gamma\ln \cos^2(\theta/2))$, where $\gamma$ is the anomalous dimension of the multiplicity. The $O(\gamma)$ correction restores the boost invariance of the cross section., Comment: Latex file

Published
1995
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14. In-Medium Excitations

Author

Rapp, R., Kämpfer, B., Andronic, A., Blaschke, D., Fuchs, C., Harada, M., Hilger, T., Kitazawa, M., Kunihiro, T., Petreczky, P., Riek, F., Sasaki, C., Thomas, R., Tolos, L., Zhuang, P., van Hees, H., Vogt, R., Zschocke, S., Friman, Bengt, editor, Höhne, Claudia, editor, Knoll, Jörn, editor, Leupold, Stefan, editor, Randrup, Jorgen, editor, Rapp, Ralf, editor, and Senger, Peter, editor

Published
2011
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19. J-PARC-HI Collaboration

Author

Ahn, J.K., primary, Akamatsu, Y., additional, Asakawa, M., additional, Ashikaga, S., additional, Busch, O., additional, Chishiro, E., additional, Chiu, M., additional, Chujo, T., additional, Cirkovic, P., additional, Csörgő, T., additional, David, G., additional, Devetak, D., additional, Djordjevic, M., additional, Esumi, S., additional, Fujii, H., additional, Fukushima, K., additional, Garg, P., additional, Gunji, T., additional, Hachiya, T., additional, Hamagaki, H., additional, Harada, H., additional, Harada, M., additional, Hasegawa, S., additional, Hashimoto, Y., additional, Hatsuda, T., additional, Hayashi, N., additional, Hirano, K., additional, Hirano, T., additional, Hong, B.S., additional, Hotchi, H., additional, Hwang, S.H., additional, Ichikawa, Y., additional, Ichisawa, T., additional, Imai, K., additional, Inaba, M., additional, Ishii, K., additional, Itakura, K., additional, Ito, T., additional, Kamiya, J., additional, Kaneta, M., additional, Kato, H., additional, Kato, S., additional, Kikuzawa, N., additional, Kim, B.C., additional, Kim, E.J., additional, Kimura, T., additional, Kinsho, M., additional, Kitamura, R., additional, Kitazawa, M., additional, Kondo, Y., additional, Kovalenko, A., additional, Kuboki, H., additional, Kurimoto, Y., additional, Liu, Y., additional, Luo, X., additional, Maruyama, T., additional, Meigo, S., additional, Miake, Y., additional, Miura, A., additional, Miyao, T., additional, Milosevic, J., additional, Mishra, D., additional, Morishita, T., additional, Morita, K., additional, Morita, Y., additional, Moriya, K., additional, Murase, K., additional, Muto, R., additional, Nadjdjerdj, L., additional, Nagamiya, S., additional, Nakamura, A., additional, Nakamura, T., additional, Nakanoya, T., additional, Nara, Y., additional, Naruki, M., additional, Niki, K., additional, Nishio, K., additional, Nonaka, C., additional, Nonaka, T., additional, Ogino, M., additional, Oguri, H., additional, Ohmori, C., additional, Ohnishi, A., additional, Oka, M., additional, Okabe, A., additional, Okamura, M., additional, Oyama, K., additional, Ozawa, K., additional, Saha, P.K., additional, Saito, T.R., additional, Sakaguchi, A., additional, Sakaguchi, T., additional, Sakai, S., additional, Sako, H., additional, Sato, K., additional, Sato, S., additional, Sato, Y., additional, Sawada, S., additional, Shibata, T., additional, Shigaki, K., additional, Shimansky, S., additional, Shimokawa, T., additional, Shimomura, M., additional, Shindo, K., additional, Shinozaki, S., additional, Shirakata, M., additional, Shobuda, Y., additional, Stojanovic, M., additional, Suganuma, K., additional, Sugimura, H., additional, Sugiyama, Y., additional, Takahashi, H., additional, Takayanagi, T., additional, Takeuchi, Y., additional, Tamura, F., additional, Tamura, H., additional, Tamura, J., additional, Tanaka, K.H., additional, Tanaka, Y., additional, Tani, N., additional, Tanida, K., additional, Tomisawa, M., additional, Toyama, T., additional, Watanabe, Y., additional, Xu, N., additional, Yamamoto, K., additional, Yamamoto, M., additional, Yokkaichi, S., additional, Yoo, I.K., additional, Yoshii, M., additional, and Yoshimoto, M., additional

Published
2021
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25. Tu1653 THERAPEUTIC EFFICACY AND SAFETY OF LENVATINIB FOR UNRESECTABLE HEPATOCELLULAR CARCINOMA BEYOND PROGRESSION WITH SORAFENIB

Author

Kitazawa M, Masahiro Sogabe, Katsuhisa Horimoto, Koichi Okamoto, Hiroshi Miyamoto, Kagiwada H, Tetsuji Takayama, Naoki Muguruma, Fukui K, Yasuteru Fujino, Takahiro Tanaka, Akihiro Hirao, Yasuhiro Mitsui, Tetsu Tomonari, Yasushi Sato, Hironori Tanaka, and Tatsuya Taniguchi

Subjects
Sorafenib, Oncology, medicine.medical_specialty, Hepatology, business.industry, Gastroenterology, medicine.disease, chemistry.chemical_compound, chemistry, Internal medicine, Hepatocellular carcinoma, medicine, Lenvatinib, business, medicine.drug
Published
2020
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27. J-PARC-HI Collaboration

Author

Ahn, J.K., Akamatsu, Y, Asakawa, M, Ashikaga, S, Busch, O, Chiu, M, Chujo, T, Ćirković, Predrag, Csörgő, T, David, G, Devetak, Damir, Đorđević, Miloš, Esumi, S, Fujii, H, Fukushima, K, Garg, P, Gunji, T, Hachiya, T, Hamagaki, H, Harada, H., Harada, M, Hasegawa, S, Hatsuda, T, Hirano, T, Hong, B, Hotchi, H, Hwang, Soonwook, Ichikawa, Y, Ichisawa, T, Imai, K, Inaba, M, Itakura, K, Kamiya, J, Kaneta, M, Kato, H., Kato, S, Kim, B.C., Kim, E.J., Kinsho, M, Kitazawa, M, Kovalenko, A, Liu, Y, Luo, X, Maruyama, T, Miake, Y, Milošević, Jovan, Mishra, D, Morita, K, Murase, K, Nađđerđ, Laslo, Nagamiya, S, Nakamura, A., Nakamura, T, Nara, Y, Naruki, M, Nishio, K, Nonaka, C., Nonaka, T, Ogino, M, Ohnishi, A, Oka, M, Okabe, A, Okamura, M, Oyama, K, Ozawa, K, Saha, P.K., Saito, T, Sakaguchi, A., Sakaguchi, T, Sakai, S, Sako, H, Sato, K., Sato, S, Sawada, S, Shigaki, K, Shimansky, S, Shimomura, M, Shobuda, Y, Stojanović, Milan, Sugimura, H, Takeuchi, Y, Tamura, F., Tamura, H., Tamura, J, Tanaka, K.H., Tanaka, Y, Tani, N, Tanida, K, Watanabe, Y, Xu, N, Yamamoto, M, Yokkaichi, S, Yoo, I.K., Yoshimoto, M, Ahn, J.K., Akamatsu, Y, Asakawa, M, Ashikaga, S, Busch, O, Chiu, M, Chujo, T, Ćirković, Predrag, Csörgő, T, David, G, Devetak, Damir, Đorđević, Miloš, Esumi, S, Fujii, H, Fukushima, K, Garg, P, Gunji, T, Hachiya, T, Hamagaki, H, Harada, H., Harada, M, Hasegawa, S, Hatsuda, T, Hirano, T, Hong, B, Hotchi, H, Hwang, Soonwook, Ichikawa, Y, Ichisawa, T, Imai, K, Inaba, M, Itakura, K, Kamiya, J, Kaneta, M, Kato, H., Kato, S, Kim, B.C., Kim, E.J., Kinsho, M, Kitazawa, M, Kovalenko, A, Liu, Y, Luo, X, Maruyama, T, Miake, Y, Milošević, Jovan, Mishra, D, Morita, K, Murase, K, Nađđerđ, Laslo, Nagamiya, S, Nakamura, A., Nakamura, T, Nara, Y, Naruki, M, Nishio, K, Nonaka, C., Nonaka, T, Ogino, M, Ohnishi, A, Oka, M, Okabe, A, Okamura, M, Oyama, K, Ozawa, K, Saha, P.K., Saito, T, Sakaguchi, A., Sakaguchi, T, Sakai, S, Sako, H, Sato, K., Sato, S, Sawada, S, Shigaki, K, Shimansky, S, Shimomura, M, Shobuda, Y, Stojanović, Milan, Sugimura, H, Takeuchi, Y, Tamura, F., Tamura, H., Tamura, J, Tanaka, K.H., Tanaka, Y, Tani, N, Tanida, K, Watanabe, Y, Xu, N, Yamamoto, M, Yokkaichi, S, Yoo, I.K., and Yoshimoto, M

Published
2019

28. Experience-based vehicle operation

Author

Sakai, Y., Kitazawa, M., Okuno, Y., and Nakamura, M.

Subjects
Motor vehicle driving -- Technology application, Experiential learning -- Technology application
Abstract

The basic idea behind the present methodology for automated automobile operation lies in building an experience-based system for state regulation of more general systems. In automobile operation, human skill is effective instead of academic knowledge, to quickly learn how to operate a real automobile; that is, experiencing, together with common sense. Control strategy is obtained by the vehicle's own experiencing using a few pieces of basic common sense. That is, a piece of common sense works as a sort of qualitative rule. Thus, the vehicle will come to smoothly trace its desirable trajectory with accumulation of experience. Keywords: automated operation, experience-based human skill, common sense, smooth tracing

Published
1994

29. J-PARC-HI Collaboration

Author

Ahn, J.K., primary, Akamatsu, Y., additional, Asakawa, M., additional, Ashikaga, S., additional, Busch, O., additional, Chiu, M., additional, Chujo, T., additional, Cirkovic, P., additional, Csörgő, T., additional, David, G., additional, Devetak, D., additional, Dordevic, M., additional, Esumi, S., additional, Fujii, H., additional, Fukushima, K., additional, Garg, P., additional, Gunji, T., additional, Hachiya, T., additional, Hamagaki, H., additional, Harada, H., additional, Harada, M., additional, Hasegawa, S., additional, Hatsuda, T., additional, Hirano, T., additional, Hong, B., additional, Hotchi, H., additional, Hwang, S.H., additional, Ichikawa, Y., additional, Ichisawa, T., additional, Imai, K., additional, Inaba, M., additional, Itakura, K., additional, Kamiya, J., additional, Kaneta, M., additional, Kato, H., additional, Kato, S., additional, Kim, B.C., additional, Kim, E.J., additional, Kinsho, M., additional, Kitazawa, M., additional, Kovalenko, A., additional, Liu, Y., additional, Luo, X., additional, Maruyama, T., additional, Miake, Y., additional, Milosevic, J., additional, Mishra, D., additional, Morita, K., additional, Murase, K., additional, Nadjdjerdj, L., additional, Nagamiya, S., additional, Nakamura, A., additional, Nakamura, T., additional, Nara, Y., additional, Naruki, M., additional, Nishio, K., additional, Nonaka, C., additional, Nonaka, T., additional, Ogino, M., additional, Ohnishi, A., additional, Oka, M., additional, Okabe, A., additional, Okamura, M., additional, Oyama, K., additional, Ozawa, K., additional, Saha, P.K., additional, Saito, T., additional, Sakaguchi, A., additional, Sakaguchi, T., additional, Sakai, S., additional, Sako, H., additional, Sato, K., additional, Sato, S., additional, Sawada, S., additional, Shigaki, K., additional, Shimansky, S., additional, Shimomura, M., additional, Shobuda, Y., additional, Stojanovic, M., additional, Sugimura, H., additional, Takeuchi, Y., additional, Tamura, F., additional, Tamura, H., additional, Tamura, J., additional, Tanaka, K.H., additional, Tanaka, Y., additional, Tani, N., additional, Tanida, K., additional, Watanabe, Y., additional, Xu, N., additional, Yamamoto, M., additional, Yokkaichi, S., additional, Yoo, I.K., additional, and Yoshimoto, M., additional

Published
2019
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32. J-PARC-HI Collaboration

Author

Ahn, J.K., primary, Akamatsu, Y., additional, Asakawa, M., additional, Busch, O., additional, Chiu, M., additional, Chujo, T., additional, Cirkovic, P., additional, Csörgő, T., additional, David, G., additional, Devetak, D., additional, Dordevic, M., additional, Esumi, S., additional, Fujii, H., additional, Fukushima, K., additional, Garg, P., additional, Gunji, T., additional, Hachiya, T., additional, Hamagaki, H., additional, Harada, H., additional, Harada, M., additional, Hasegawa, S., additional, Hatsuda, T., additional, Hirano, T., additional, Hong, B., additional, Hotchi, H., additional, Hwang, S.H., additional, Ichikawa, Y., additional, Ichisawa, T., additional, Imai, K., additional, Inaba, M., additional, Itakura, K., additional, Kamiya, J., additional, Kaneta, M., additional, Kato, H., additional, Kato, S., additional, Kim, B.C., additional, Kim, E.J., additional, Kinsho, M., additional, Kitazawa, M., additional, Kovalenko, A., additional, Liu, Y., additional, Luo, X., additional, Maruyama, T., additional, Miake, Y., additional, Milosevic, J., additional, Mishra, D., additional, Morita, K., additional, Murase, K., additional, Nadjdjerdj, L., additional, Nagamiya, S., additional, Nakamura, J., additional, Nakamura, T., additional, Nara, Y., additional, Naruki, M., additional, Nishio, K., additional, Nonaka, C., additional, Nonaka, T., additional, Ogino, M., additional, Ohnishi, A., additional, Oka, M., additional, Okabe, A., additional, Okamura, M., additional, Oyama, K., additional, Ozawa, K., additional, Saha, P.K., additional, Saito, T., additional, Sakaguchi, A., additional, Sakaguchi, T., additional, Sakai, S., additional, Sako, H., additional, Sato, K., additional, Sato, S., additional, Sawada, S., additional, Shigaki, K., additional, Shimansky, S., additional, Shimomura, M., additional, Shobuda, Y., additional, Stojanovic, M., additional, Sugimura, H., additional, Takeuchi, Y., additional, Tamura, F., additional, Tamura, H., additional, Tamura, J., additional, Tanaka, K.H., additional, Tanaka, Y., additional, Tani, N., additional, Tanida, K., additional, Watanabe, Y., additional, Xu, N., additional, Yamamoto, M., additional, Yokkaichi, S., additional, Yoo, I.K., additional, and Yoshimoto, M., additional

Published
2017
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33. Thermodynamics and reference scale of SU(3) gauge theory from gradient flow on fine lattices

Author

Kitazawa, M., Asakawa, M., Hatsuda, T., Iritani, T., Etsuko Itou, and Suzuki, H.

Subjects
High Energy Physics::Theory, High Energy Physics - Lattice, High Energy Physics::Lattice, High Energy Physics - Lattice (hep-lat), FOS: Physical sciences
Abstract

We study the parametrization of lattice spacing and thermodynamics of SU(3) gauge theory on the basis of the Yang-Mills gradient flow on fine lattices. The lattice spacing of the Wilson gauge action is determined over a wide range $6.3\le\beta\le7.5$ with high accuracy. The measurements of the flow time and lattice spacing dependences of the expectation values of the energy-momentum tensor are performed on fine lattices., Comment: 7 pages, 3 figures, Proceedings of the 33rd International Symposium on Lattice Field Theory (Lattice 2015), 14-18 July 2015, Kobe, Japan

Published
2015

34. Electromagnetic probes for critical fluctuations of phase transitions in dense QCD

Author

Nishimura Toru, Kitazawa Masakiyo, and Kunihiro Teiji

Subjects
Physics, QC1-999
Abstract

We study how the dilepton production rates and electric conductivity are affected by the phase transition to color superconductivity and the QCD critical point. Effects of the soft modes associated with these phase transitions are incorporated through the photon self-energy called the Aslamazov- Larkin, Maki-Thompson, and density-of-states terms, which are responsible for the paraconductivity in metallic superconductors. We show that anomalous enhancements of the production rate in the low energy/momentum region and the conductivity occur around the respective critical points.

Published
2024
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39. Studies of high density baryon matter with high intensity heavy-ion beams at J-PARC

Author

Sako, H., primary, Harada, H., additional, Sakaguchi, T., additional, Chujo, T., additional, Esumi, S., additional, Gunji, T., additional, Hasegawa, S., additional, Hwang, S.H., additional, Ichikawa, Y., additional, Imai, K., additional, Itakura, K., additional, Kaneta, M., additional, Kim, B.C., additional, Kinsho, M., additional, Kitazawa, M., additional, Liu, Y., additional, Masui, H., additional, Nagamiya, S., additional, Nishio, K., additional, Okamura, M., additional, Oyama, K., additional, Ozawa, K., additional, Saha, P.K., additional, Sakaguchi, A., additional, Sato, S., additional, Shigaki, K., additional, Sugimura, H., additional, Tanida, K., additional, Tamura, J., additional, Tamura, H., additional, Nara, Y., additional, and Saito, T.R., additional

Published
2016
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40. Time scales of melt extraction revealed by distribution of lava composition across a ridge axis

Author

Cordier, Carole, Benoit, Mathieu, Hémond, Christophe, Dyment, J., Le Gall, Bernard, Briais, Anne, Kitazawa, M., Domaines Océaniques (LDO), Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Observatoire des Sciences de l'Univers-Institut d'écologie et environnement-Centre National de la Recherche Scientifique (CNRS), Institut de Physique du Globe de Paris (IPGP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS), Dynamique terrestre et planétaire (DTP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), and Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Université Fédérale Toulouse Midi-Pyrénées-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
mantle processes, [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry, [SDE.MCG]Environmental Sciences/Global Changes, spreading ridge, basaltic lavas
Abstract

International audience; Temporal fluctuations of magmatic processes during the last 800 kyr have been investigated for the slow spreading Central Indian Ridge. The fluctuations are recorded by variations in lava chemistry along a 40 km long profile across the ridge. The temporal relations of the basalts were accurately restored using magnetic microanomalies. We report on the occurrence of ancient lavas enriched in incompatible elements whereas on-axis samples are typical normal mid-ocean ridge basalts. The enriched lavas are symmetrically distributed on either side of the ridge, implying that enriched melts reached the seafloor at intervals of about 150–200 kyr. This periodicity is viewed as a characteristic time scale in the aggregation processes of the melts produced from a heterogeneous mantle source. Geochemical variations of zero-age mid-ocean ridge basalts may primarily reflect such periodic processes rather than the spatial distribution of mantle heterogeneities.

Published
2010
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42. Seafloor Dating Within The Brunhes Period With Deep-Sea Vector Magnetic Anomalies

Author

Kitazawa, M., Dyment, J., Chauvin, Annick, Al., Et, Institut de Physique du Globe de Paris (IPGP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS), Géosciences Rennes (GR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre Armoricain de Recherches en Environnement-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS), and Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre Armoricain de Recherches en Environnement-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2005

44. Anomalous enhancement of dilepton production due to soft modes in dense quark matter

Author

Nishimura Toru, Kitazawa Masakiyo, and Kunihiro Teiji

Subjects
Physics, QC1-999
Abstract

We explore how the dilepton production rate is modified near the critical temperature of color superconductivity and QCD critical point by the soft modes inherently associated with the phase transitions of second-order. It is shown that the soft modes affect the photon self-energy significantly through so called the Aslamasov-Larkin, Maki-Thompson and density of states terms, which are known responsible for the paraconductivity in the metalic superconductivity, and cause an anomalous enhancement of the production rate in the low energy/momemtum region.

Published
2023
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45. From lattice to observables: Real and virtual experiments for exploring hot and dense QCD

Author

Kitazawa Masakiyo

Subjects
Physics, QC1-999
Abstract

Relativistic heavy-ion collisions and the lattice QCD Monte-Carlo simulations are important “experimental” tools for investigating the properties of the medium described by QCD under extreme conditions. After briefly ex-amining their characteristics, I pick up the study of the critical points in QCD as an example of the research subjects that these two tools play complementary roles and discuss recent topics that have been achieved with the use of each tool.

Published
2023
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