Determining transport coefficients for a microscopic simulation of a hadron gas

Scott Pratt, Alexander Baez, and Jane Kim
Phys. Rev. C 95, 024901 – Published 3 February 2017

Abstract

Quark-gluon plasmas produced in relativistic heavy-ion collisions quickly expand and cool, entering a phase consisting of multiple interacting hadronic resonances just below the QCD deconfinement temperature, T155 MeV. Numerical microscopic simulations have emerged as the principal method for modeling the behavior of the hadronic stage of heavy-ion collisions, but the transport properties that characterize these simulations are not well understood. Methods are presented here for extracting the shear viscosity and two transport parameters that emerge in Israel-Stewart hydrodynamics. The analysis is based on studying how the stress-energy tensor responds to velocity gradients. Results are consistent with Kubo relations if viscous relaxation times are twice the collision time.

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  • Received 23 October 2016
  • Revised 22 December 2016

DOI:https://doi.org/10.1103/PhysRevC.95.024901

©2017 American Physical Society

Physics Subject Headings (PhySH)

Statistical Physics & ThermodynamicsFluid Dynamics

Authors & Affiliations

Scott Pratt1, Alexander Baez1,2, and Jane Kim1

  • 1Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
  • 2Department of Physics, University of South Florida, 4202 East Fowler Ave, Tampa, Florida 33620-7100

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Issue

Vol. 95, Iss. 2 — February 2017

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