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Article type: Cover
2005 Volume 112 Issue 1 Pages
Cover1-
Published: October 20, 2005
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Article type: Appendix
2005 Volume 112 Issue 1 Pages
App1-
Published: October 20, 2005
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Article type: Appendix
2005 Volume 112 Issue 1 Pages
A1-A2
Published: October 20, 2005
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[in Japanese]
Article type: Article
2005 Volume 112 Issue 1 Pages
A3-A7
Published: October 20, 2005
Released on J-STAGE: October 02, 2017
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A. NIEGAWA
Article type: Article
2005 Volume 112 Issue 1 Pages
A8-A14
Published: October 20, 2005
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Georg Wolschin
Article type: Article
2005 Volume 112 Issue 1 Pages
A15-A18
Published: October 20, 2005
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The evolution of net-proton rapidity spectra with √<^SNN> in heavy relativistic systems is proposed as an indicator for local equilibration, longitudinal expansion, and deconfinement. Bell-shaped distributions in central collisions at AGS energies and double-humped nonequilibrium spectra at SPS show pronounced collective expansion. The broad midrapidity valley recently discovered at RHIC indicates longitudinal expansion of a locally equilibrated subsystem. In central Au-Au collisions at 200 GeV, fast local equilibration which is most likely due to deconfinement is estimated in a Relativistic Diffusion Model to occur for 14 per cent of the incoming baryons. A prediction is made for √<^SNN>=62.4GeV.
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[in Japanese], [in Japanese]
Article type: Article
2005 Volume 112 Issue 1 Pages
A19-A21
Published: October 20, 2005
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Teiji Kunihiro
Article type: Article
2005 Volume 112 Issue 1 Pages
A22-A26
Published: October 20, 2005
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We review the renormalization group method applied to non-equilibrium dynamics by tracing the way how the hydrodynamic equations can be derived as reduced dynamics of the Boltzmann equation as a typical example.
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Masahiro MARUYAMA
Article type: Article
2005 Volume 112 Issue 1 Pages
A27-A31
Published: October 20, 2005
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Kazuaki Ohnishi
Article type: Article
2005 Volume 112 Issue 1 Pages
A32-A36
Published: October 20, 2005
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The dynamic (i.e., non-equilibrium) critical phenomena of the second order chiral phase transition are discussed. The analyses are made by means of the mode coupling theory and the renormalization group approach. The overdamping of the meson modes at the critical point is found. The dynamic universality class of the chiral transition as well as the classification scheme of Hohenberg and Halperin are reconsidered.
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Masayasu Harada, Mannque Rho, Chihiro Sasaki
Article type: Article
2005 Volume 112 Issue 1 Pages
A37-A41
Published: October 20, 2005
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We study the pion velocity near the critical temperature T_c of chiral symmetry restoration in QCD. Using chiral perturbation theory based on hidden local symmetry (HLS) as an effective field theory, where the chiral symmetry restoration is realized as the vector manifestation (VM), we show that the pion velocity for T→T_c is close to the speed of light, v_π(T)=0.83-0.99 which is at variance with the sigma model result which predicts v_π(T_c)=0. Our prediction on v_π(T_c) is compared with the value extracted from the recent RHIC data.
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[in Japanese]
Article type: Article
2005 Volume 112 Issue 1 Pages
A42-A46
Published: October 20, 2005
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HIYOSHI KIUCHI, MAKOTO OKA
Article type: Article
2005 Volume 112 Issue 1 Pages
A47-A49
Published: October 20, 2005
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Phase structure of quark matter which consists of two light flavors (up and down) in the instanton vacuum is investigated at finite chemical potential (μ) and zero temperature (T). The finite μ form factors from the zero mode quark are calculated without approximation. Phase structures for N_c=3 and for N_c=2 are evaluated using thermodynamic potential in mean-field approximation. It is found that in all the cases with finite current quark mass the doubly symmetry broken (DSB) phase in which both chiral and color symmetries are broken can be realized between pure chiral and pure color symmetry broken phase. It is noteworthy that a finite current quark mass raises the pressure in DSB phase, and in consequence, the DSB region becomes much wider than the chiral limit.
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Mei Huang
Article type: Article
2005 Volume 112 Issue 1 Pages
A50-A52
Published: October 20, 2005
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Recent results on the gapless 2SC phase are reviewed. These include: the thermal stability under the constraint of the local charge neutrality condition, the properties at zero and nonzero temperatures, and the Chromomagetic instability. Possible solutions to the Chromomagetic instabilty are discussed.
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Masakiyo Kitazawa
Article type: Article
2005 Volume 112 Issue 1 Pages
A53-A55
Published: October 20, 2005
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We derive an effective equation to describe the dynamical behavior of the fluctuations of the diquark-pair field near but above the critical temperature(T_c) of the color superconductivity. It is shown that the obtained equation corresponds to the linear part of the time-dependent Ginzburg-Landau equation. Using the effective equation, we discuss the properties of the pair field near T_c. Then, we calculate the fluctuation contribution to some observables and show that there appear anomalous behaviors in the observables near T_c.
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[in Japanese]
Article type: Article
2005 Volume 112 Issue 1 Pages
A56-A60
Published: October 20, 2005
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[in Japanese]
Article type: Article
2005 Volume 112 Issue 1 Pages
A61-A65
Published: October 20, 2005
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M. Biyajima, M. Kaneyama, T. Mizoguchi
Article type: Article
2005 Volume 112 Issue 1 Pages
A66-A70
Published: October 20, 2005
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In order to analyze data on p_t distributions at RHIC experiments, we have derived several formulas and estimated temperatures in terms of them. The temperature fluctuation is a key concept in our calculations.
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N. Ikezi, M. Asakawa, Y. Tsue
Article type: Article
2005 Volume 112 Issue 1 Pages
A71-A77
Published: October 20, 2005
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We study the dynamics of chiral phase transition in the O(4) linear sigma model using the time-dependent variational approach with squeezed states. We show that large domains of the disoriented chiral condensate (DCC) are formed due to the combined effect of the mode-mode and the isospin-isospin correlations. Moreover, it is found that, when the mode-mode correlation is included, the DCC domain formation is accompanied by the amplification of the quantum fluctuation, which implies the squeezing of the state. Since this effect cannot be included in the mean field approximation, this mechanism of DCC domain formation is different from the parametric amplification. We also present a result of an analysis of the two-particle correlation function for the pion fields, which reflects unique nature of the squeezed states.
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M. Matsuo, T. Matsui
Article type: Article
2005 Volume 112 Issue 1 Pages
A78-A80
Published: October 20, 2005
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For the purpose of describing the final stage of the space-time evolution of dense matter created by ultrarelativistic nuclear collisions, we formulate a kinetic theory of mesons starting from the Heisenberg equation of motion of self-interacting quantized fields and discuss on the dispersion relations of the collective mesonic excitations at finite temperatures using these kinetic equations.
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[in Japanese], [in Japanese]
Article type: Article
2005 Volume 112 Issue 1 Pages
A81-A83
Published: October 20, 2005
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M. Isse, A. Ohnishi, N. Otuka, P. K. Sahu, Y. Nara
Article type: Article
2005 Volume 112 Issue 1 Pages
A84-A86
Published: October 20, 2005
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Collective flows in heavy-ion collisions from ACS ((2-11)A GeV) to SPS ((40,158)A GeV) energies are investigated in a nonequilibrium transport model with nuclear mean-field (MF). We can qualitatively reproduce the experimental data in this incident energies. We find momentum dependent MF is still important for heavy-ion collisions at SPS.
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Article type: Appendix
2005 Volume 112 Issue 1 Pages
App2-
Published: October 20, 2005
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Article type: Appendix
2005 Volume 112 Issue 1 Pages
App3-
Published: October 20, 2005
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Article type: Cover
2005 Volume 112 Issue 1 Pages
Cover2-
Published: October 20, 2005
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Article type: Cover
2005 Volume 112 Issue 1 Pages
Cover3-
Published: October 20, 2005
Released on J-STAGE: October 02, 2017
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