Fluctuation dynamics near the QCD critical point

doi:10.1103/PhysRevC.102.054911

	Fluctuation dynamics near the QCD critical point
	Du, Lipei 2; Heinz, Ulrich 2,5; Rajagopal, Krishna 3; Yin, Yi 1,3,4
刊名	PHYSICAL REVIEW C
	2020-11-23
卷号	102 期号:5 页码:27
ISSN号	2469-9985
DOI	10.1103/PhysRevC.102.054911
通讯作者	Du, Lipei()
英文摘要	The evolution of nonhydrodynamic slow processes near the QCD critical point is explored with the novel HYDRO+ framework, which extends the conventional hydrodynamic description by coupling it to additional explicitly evolving slow modes describing long wavelength fluctuations. Their slow relaxation is controlled by critical behavior of the correlation length and is independent from gradients of matter density and pressure that control the evolution of the hydrodynamic quantities. In this exploratory study, we follow the evolution of the slow modes on top of a simplified QCD matter background, allowing us to clearly distinguish and study, both separately and in combination, the main effects controlling the dynamics of critical slow modes. In particular, we show how the evolution of the slow modes depends on their wave number, the expansion of and advection by the fluid background, and the behavior of the correlation length. Nonequilibrium contributions from the slow modes to bulk matter properties that affect the bulk dynamics (entropy, pressure, temperature, and chemical potential) are discussed and found to be small.
资助项目	U.S. Department of Energy, Office of Science, Office for Nuclear Physics[DE-SC0004286] ; U.S. Department of Energy, Office of Science, Office for Nuclear Physics[DE-SC0011090] ; National Science Foundation (NSF)[ACI-1550223] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB34000000] ; MIT Center for Theoretical Physics ; Alexander von Humboldt Foundation ; Beam Energy Scan Theory (BEST) Collaboration
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000591728000003
资助机构	U.S. Department of Energy, Office of Science, Office for Nuclear Physics ; National Science Foundation (NSF) ; Strategic Priority Research Program of Chinese Academy of Sciences ; MIT Center for Theoretical Physics ; Alexander von Humboldt Foundation ; Beam Energy Scan Theory (BEST) Collaboration
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/139458]
专题	中国科学院近代物理研究所
通讯作者	Du, Lipei
作者单位	1.Chinese Acad Sci, Quark Matter Res Ctr, Inst Modern Phys, Lanzhou 073000, Gansu, Peoples R China 2.Ohio State Univ, Dept Phys, Columbus, OH 43210 USA 3.MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA 4.Univ Chinese Acad Sci, Coll Nucl Sci, Beijing 100049, Peoples R China 5.Goethe Univ Frankfurt, Inst Theoret Phys, Max von Laue Str 1, D-60438 Frankfurt, Germany
推荐引用方式 GB/T 7714	Du, Lipei,Heinz, Ulrich,Rajagopal, Krishna,et al. Fluctuation dynamics near the QCD critical point[J]. PHYSICAL REVIEW C,2020,102(5):27.
APA	Du, Lipei,Heinz, Ulrich,Rajagopal, Krishna,&Yin, Yi.(2020).Fluctuation dynamics near the QCD critical point.PHYSICAL REVIEW C,102(5),27.
MLA	Du, Lipei,et al."Fluctuation dynamics near the QCD critical point".PHYSICAL REVIEW C 102.5(2020):27.