Nonperturbative Phenomena at High Temperature and Density

高温高密度下的非微扰现象

基本信息

批准号：
08304024
负责人：
MIYAMURA Osamu
金额：
$ 8.32万
依托单位：
HIROSHIMA UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08304024/
关键词：
Quantum Chromo Dynamics High temperature and density Quark Gluon Plasma Color superconductivity Chiral symmetry Quark confinement Thermal field theory Hadron 高温高密度クォーク・グル-オンプラズマクォーク・ハドロン転移量子場の非摂動現象閉じこめカイラル転移有限温度・密度の場の理論 /

项目摘要

Possible existence of color superconducting phase in Quantum Chromo Dynamics at high density has been pointed out by Iwasaki based on BCS-like mean field approach. An enhanced fluctuation of scaler density near chiral restoration has been reexamined by Hatsuda and Kuni-hiro. They have discussed that present experimental data imply such precursory phenomena. A new experiment has been proposed to confirm them. Driving mechanism of chiral symme-try breaking has been studied by Oka abd Takagi based on instanton induced interaction and Beth-Salpeter equation. Through the studies, chiral symmetric nature of , baryon spectrum has been clarified. A new method to evaluate effeciive potential has been developed by In-agaki. Structure of QCD vacuum has been analyzed by Suzuki and Miyamura using lattice simulation. It is found that both chiral symmetry breaking and topological structure are kept in a abelian projected gauge field occupied by monopoles. Internal structure of hadrons has been studied by Kodaira and Saito in perturbative and nonperturbative treatments. In the former, higher order correction has been newly calculated. Noda and Biyajima have analized high energy collisions of hadrons and leptons . Characteristics of baryon productions and multiparticle productions have been clarified. Kato and Tanaka has extended automatic cal-culation of Feynman diagram extended for the processes including super symmetric particles. Phase transition under high curvature has been investigated by Muta and Inagaki. Finally, a workshop has been organized in the end of the 1998 to discuss and to summerize results of this research program.

伊瓦萨基（Iwasaki）基于BCS样平均场方法指出了高密度量子染色体动力学中颜色超导相的可能存在。 Hatsuda和Kuni-Hiro重新审查了手性恢复附近鳞片密度的增强。他们已经讨论了目前的实验数据暗示了这种预寿命现象。已经提出了一个新的实验来确认它们。 Oka Abd Takagi研究了基于Instanton诱导的相互作用和Beth-Salpeter方程，已经研究了手性象征突破的驾驶机制。通过研究，阐明了手性对称性质。 In-Agaki开发了一种评估有效潜力的新方法。铃木和宫村使用晶格模拟对QCD真空的结构进行了分析。发现手性对称性破裂和拓扑结构都保存在单孔占据的Abelian投影量规场中。 Kodaira和Saito在扰动和非扰动处理中研究了Hadron的内部结构。在前者中，高阶校正已被新计算。 Noda和Biyajima对Hadron和Leptons的高能量碰撞进行了分析。 Baryon Productions和多粒生产的特征已阐明。加藤和田中已经扩展了Feynman图的自动CAL表，用于包括超对称粒子在内的过程。 Muta和Inagaki研究了高曲率下的相变。最后，在1998年末组织了一个研讨会，以讨论和夏季化该研究计划的结果。