Chiral relaxation time at the crossover of quantum chromodynamics

doi:10.1103/PhysRevD.94.054011

	Chiral relaxation time at the crossover of quantum chromodynamics
	Ruggieri, M; Chernodub, M; Peng GX(彭光雄); Peng, GX
刊名	PHYSICAL REVIEW D
	2016
卷号	94 期号:5
DOI	10.1103/PhysRevD.94.054011
通讯作者	彭光雄
英文摘要	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.
语种	英语
WOS记录号	WOS:000383150300006
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/260626]
专题	高能物理研究所_理论物理室
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Ruggieri, M,Chernodub, M,Peng GX,et al. Chiral relaxation time at the crossover of quantum chromodynamics[J]. PHYSICAL REVIEW D,2016,94(5).
APA	Ruggieri, M,Chernodub, M,彭光雄,&Peng, GX.(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).