Rapidity Dependence of Transverse Momentum Correlations from Fluctuating Hydrodynamics

29th Winter Workshop on Nuclear Dynamics

Pokharel, Rajendra^1 ; Gavin, Sean^1 ; Moschelli, George^2

Wayne State University, 666 W Hancock, Detroit, MI 48084, United States^1

Frankfurt Institute for Advanced Studies, Johann Wolfgang Goethe University, 60438 Frankfurt am Main, Germany^2

关键词: Experimental analysis;    Fluctuating hydrodynamics;    Second-order theory;    Stochastic noise;    Theoretical equation;    Transport coefficient;    Transverse momenta;    Viscous diffusion;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/458/1/012005/pdf
DOI  :  10.1088/1742-6596/458/1/012005

来源: IOP

【 摘 要 】

Interest in the development of the theory of fluctuating hydrodynamics is growing [1]. Early efforts suggested that viscous diffusion broadens the rapidity dependence of two-particle transverse momentum correlations [2]. That work stimulated an experimental analysis by STAR [3]. In this work we present results of correlation observables computed using the second order Israel-Stewart hydrodynamics with stochastic noise and latest theoretical equations of state and transport coefficients. We also compute these observables using the first Navier-Stokes theory. We find that the second order theory better describes the data and also provides some novel features forced by causal constraints of the second order theory.