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Chiral relaxation time at the crossover of quantum chromodynamics
Ruggieri, M; Peng GX(彭光雄); Peng, GX; Chernodub, M
2016
发表期刊PHYSICAL REVIEW D
卷号94期号:5
通讯作者彭光雄
文章类型Article
摘要We study microscopic processes responsible for chirality flips in the thermal bath of quantum chromodynamics at finite temperature and zero baryon chemical potential. We focus on the temperature range where the crossover from chirally broken phase to quark-gluon plasma takes place, namely, T similar or equal to (150, 200) MeV. The processes we consider are quark-quark scatterings mediated by collective excitations with the quantum number of pions and sigma meson; hence we refer to these processes simply as one-pion (one-sigma) exchanges. We use a Nambu-Jona-Lasinio model to compute equilibrium properties of the thermal bath, as well as the relevant scattering kernel to be used in the collision integral to estimate the chiral relaxation time tau. We find tau similar or equal to 0.1 divided by 1 fm/c around the chiral crossover.
DOI10.1103/PhysRevD.94.054011
关键词[WOS]JONA-LASINIO MODEL ; EQUATION-OF-STATE ; DYNAMICAL MODEL ; QUASI-PARTICLES ; QCD ; SUPERCONDUCTIVITY ; ANALOGY
语种英语
WOS记录号WOS:000383150300006
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/260626
专题理论物理室
作者单位中国科学院高能物理研究所
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GB/T 7714
Ruggieri, M,Peng GX,Peng, GX,et al. Chiral relaxation time at the crossover of quantum chromodynamics[J]. PHYSICAL REVIEW D,2016,94(5).
APA Ruggieri, M,彭光雄,Peng, GX,&Chernodub, M.(2016).Chiral relaxation time at the crossover of quantum chromodynamics.PHYSICAL REVIEW D,94(5).
MLA Ruggieri, M,et al."Chiral relaxation time at the crossover of quantum chromodynamics".PHYSICAL REVIEW D 94.5(2016).
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