Rapidity decorrelation of anisotropic flow caused by hydrodynamic fluctuations
Abstract
We investigate the effect of hydrodynamic fluctuations on the rapidity decorrelations of anisotropic flow in high-energy nuclear collisions using a (3+1)-dimensional integrated dynamical model. The integrated dynamical model consists of twisted initial conditions, fluctuating hydrodynamics, and hadronic cascades on an event-by-event basis. To understand the rapidity decorrelation, we analyze the factorization ratio in the longitudinal direction. Comparing the factorization ratios between fluctuating hydrodynamics and ordinary viscous hydrodynamics, we find a sizable effect of hydrodynamic fluctuations on rapidity decorrelations. We also propose to calculate the Legendre coefficients of the flow magnitude and the event-plane angle to understand the decorrelation of anisotropic flow in the longitudinal direction.
Cite
@article{arxiv.2003.13496,
title = {Rapidity decorrelation of anisotropic flow caused by hydrodynamic fluctuations},
author = {Azumi Sakai and Koichi Murase and Tetsufumi Hirano},
journal= {arXiv preprint arXiv:2003.13496},
year = {2020}
}
Comments
15 pages, 10 figures