Study of Dynamical Properties around the QCD Critical Points based on Chiral Effective Theory

基于手性有效理论的QCD临界点附近动力学性质研究

• 批准号: 20540265
• 负责人: KUNIHIRO Teiji
• 金额: $ 2.66万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20540265/
• 关键词: 原子核理論; 量子色力学(QCD); QCD臨界点; カイラル相転移; カラー超伝導; ベクトル相互作用; 軸性異常; クォークスペクトル; 3ピーク構造; 量子色力学; 臨界点; 相対論的流体方程式; 密度ゆらぎ; 熱ゆらぎ; マッハコーン; QCD; 相転移; カイラル対称性; エントロピー生成; 輸送係数

We have shown on the basis of the chiral effective theory that the QCD matter can have a multiple-critical points structure under charge neutrality. The soft dynamics around the typical QCD critical point has been shown to be dominated by the energy fluctuations. A generic class of hydrodynamic equations for a viscous fluid has been derived by applying the so called renormalization-group method. We have shown that the mysterious early thermalization of the QCD matter suggested by RHIC experiments can be attributed to the chaotic behavior of the nonlinear dynamics of the classical Yang-Mills field. A novel diagrammatical method for computing the transport coefficients in the relativistic quantum field theory has been developed. We have established that the quark spectral function gets to develop an ultrasoft mode at high temperature generically.

我们基于手性有效理论证明了QCD物质在电中性下可以具有多临界点结构。典型 QCD 临界点周围的软动力学已被证明由能量波动主导。通过应用所谓的重正化群方法导出了一类粘性流体的流体动力学方程。我们已经证明，RHIC 实验所暗示的 QCD 物质神秘的早期热化可归因于经典杨-米尔斯场非线性动力学的混沌行为。开发了一种计算相对论量子场论中输运系数的新颖图解方法。我们已经确定夸克谱函数一般在高温下会发展出超软模式。

项目成果

Chiral Symmetry and Axial Anomaly in Hadron and Nuclear Physics---a review---

强子与核物理中的手性对称性和轴异常---综述---

• 发表时间: 2009
• 作者: Chul-Moon Yoo;et al.;国広悌二;国広悌二;田越秀行;Teiji Kunihiro
• 通讯作者: Teiji Kunihiro

A novel quasi-particle picture of massless and massive quarks coupled with a massive boson at finite temperature and its effect on the dilepton production rate

有限温度下无质量和大质量夸克与大质量玻色子耦合的新型准粒子图及其对双轻子产生速率的影响

• 发表时间: 2008
• 期刊: Prog. Theor. Phys. Suppl. 174
• 作者: K. Mitsutani;et al.
• 通讯作者: et al.

Toward a Theory of Entropy Production in the little and Big Bang

走向小爆炸和大爆炸中的熵产生理论

• 发表时间: 2009
• 期刊: Prog.Theor.Phys. 121
• 作者: T.Kunihiro;B.Muller;A.Ohnishi A.Schafer
• 通讯作者: A.Ohnishi A.Schafer

Second-order Relativistic Hydrodynamic Equations for Viscous Systems : How does the dissipation affects the internal energy?

粘性系统的二阶相对论流体动力学方程：耗散如何影响内能？

• 发表时间: 2010
• 期刊: Phys.Lett.B690
• 作者: M. Asakawa;K.Tsumura T.Kunihiro
• 通讯作者: K.Tsumura T.Kunihiro

Nature of the sigma meson as revealed by its softening process

西格玛介子的软化过程揭示了其本质

• 发表时间: 2010
• 期刊: Nucl.Phys.A 848
• 作者: Tetsuo Hyodo;Daisuke Jido;Teiji Kunihiro
• 通讯作者: Teiji Kunihiro