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Multiplicative noise and the diffusion of conserved densities

文献类型：期刊论文

作者Chao, Jingyi2; Schafer, Thomas1
刊名JOURNAL OF HIGH ENERGY PHYSICS
出版日期2021
卷号2021期号:1页码:17
关键词Effective Field Theories Quark-Gluon Plasma Stochastic Processes
ISSN号1029-8479
DOI10.1007/JHEP01(2021)071
通讯作者Chao, Jingyi(jychao@impcas.ac.cn)
英文摘要Stochastic fluid dynamics governs the long time tails of hydrodynamic correlation functions, and the critical slowing down of relaxation phenomena in the vicinity of a critical point in the phase diagram. In this work we study the role of multiplicative noise in stochastic fluid dynamics. Multiplicative noise arises from the dependence of transport coefficients, such as the diffusion constants for charge and momentum, on fluctuating hydrodynamic variables. We study long time tails and relaxation in the diffusion of a conserved density (model B), and a conserved density coupled to the transverse momentum density (model H). Careful attention is paid to fluctuation-dissipation relations. We observe that multiplicative noise contributes at the same order as non-linear interactions in model B, but is a higher order correction to the relaxation of a scalar density and the tail of the stress tensor correlation function in model H.
WOS关键词FIELD-THEORY ; EQUATIONS ; DYNAMICS ; RENORMALIZATION
资助项目[US Department of Energy] ; [United States Department of Energy (DOE)] ; [BEST (Beam Energy Scan Theory) DOE Topical Collaboration] ; [Major State Basic Research Development Program in China] ; [National Basic Research Program of China]
WOS研究方向Physics
语种英语
WOS记录号WOS:000609437600003
出版者SPRINGER
资助机构US Department of Energy ; BEST (Beam Energy Scan Theory) DOE Topical Collaboration ; Major State Basic Research Development Program in China
源URL[http://119.78.100.186/handle/113462/136965]  
专题中国科学院近代物理研究所
作者单位1.University of North Carolina
2.Institute of Modern Physics, Chinese Academy of Sciences
推荐引用方式
GB/T 7714		 Chao, Jingyi,Schafer, Thomas. Multiplicative noise and the diffusion of conserved densities[J]. JOURNAL OF HIGH ENERGY PHYSICS,2021,2021(1):17.
APA Chao, Jingyi,&Schafer, Thomas.(2021).Multiplicative noise and the diffusion of conserved densities.JOURNAL OF HIGH ENERGY PHYSICS,2021(1),17.
MLA Chao, Jingyi,et al."Multiplicative noise and the diffusion of conserved densities".JOURNAL OF HIGH ENERGY PHYSICS 2021.1(2021):17.

入库方式： OAI收割

来源：近代物理研究所

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