Mode-coupling effects in anisotropic flow in heavy-ion collisions

Qian, Jing; Heinz, Ulrich; Liu, Jia

doi:10.1103/PhysRevC.93.064901

Mode-coupling effects in anisotropic flow in heavy-ion collisions

Journal Article · Mon Jun 06 00:00:00 EDT 2016 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.93.064901· OSTI ID:1604413

Qian, Jing ^[1]; ^[2]; Liu, Jia ^[2]

Harbin Inst. of Technology, Harbin (China); The Ohio State Univ., Columbus, OH (United States); The Ohio State University
The Ohio State Univ., Columbus, OH (United States)

Higher-order anisotropic flows in heavy-ion collisions are affected by nonlinear mode coupling effects. It has been suggested that the associated nonlinear hydrodynamic response coefficients probe the transport properties and are largely insensitive to the spectrum of initial density fluctuations of the medium created in these collisions. To test this suggestion, we explore nonlinear mode coupling effects in event-by-event viscous fluid dynamics, using two different models for the fluctuating initial density profiles, and compare the nonlinear coupling coefficients between the initial eccentricity vectors before hydrodynamic expansion and the final flow vectors after the expansion. For several mode coupling coefficients we find significant sensitivity to the initial fluctuation spectrum. Finally, they all exhibit strong sensitivity to the specific shear viscosity at freeze-out, but only weak dependence on the shear viscosity during hydrodynamic evolution.

View Accepted Manuscript (DOE)

Research Organization:: The Ohio State Univ., Columbus, OH (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Grant/Contract Number:: SC0004286

OSTI ID:: 1604413

Alternate ID(s):: OSTI ID: 1256132

Journal Information:: Physical Review C, Journal Name: Physical Review C Journal Issue: 6 Vol. 93; ISSN PRVCAN; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Collective flow in 2.76 and 5.02 A TeV Pb + Pb collisions Zhao, Wenbin; Xu, Hao-jie; Song, Huichao The European Physical Journal C, Vol. 77, Issue 9 https://doi.org/10.1140/epjc/s10052-017-5186-x	journal	September 2017
Scaling behavior of anisotropic flow harmonics in the far from equilibrium regime Borghini, Nicolas; Feld, Steffen; Kersting, Nina The European Physical Journal C, Vol. 78, Issue 10 https://doi.org/10.1140/epjc/s10052-018-6313-z	journal	October 2018
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