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Nuclear Theory

arXiv:1503.03226 (nucl-th)
[Submitted on 11 Mar 2015 (v1), last revised 19 May 2015 (this version, v3)]

Title:Relativistic quantum transport coefficients for second-order viscous hydrodynamics

Authors:Wojciech Florkowski, Amaresh Jaiswal, Ewa Maksymiuk, Radoslaw Ryblewski, Michael Strickland
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Abstract:We express the transport coefficients appearing in the second-order evolution equations for bulk viscous pressure and shear stress tensor using Bose-Einstein, Boltzmann, and Fermi-Dirac statistics for the equilibrium distribution function and Grad's 14-moment approximation as well as the method of Chapman-Enskog expansion for the non-equilibrium part. Specializing to the case of transversally homogeneous and boost-invariant longitudinal expansion of the viscous medium, we compare the results obtained using the above methods with those obtained from the exact solution of the massive 0+1d relativistic Boltzmann equation in the relaxation-time approximation. We show that compared to the 14-moment approximation, the hydrodynamic transport coefficients obtained by employing the Chapman-Enskog method leads to better agreement with the exact solution of the relativistic Boltzmann equation.
Comments: 9 pages, 7 figures, published version
Subjects: Nuclear Theory (nucl-th); High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:1503.03226 [nucl-th]
  (or arXiv:1503.03226v3 [nucl-th] for this version)
  https://doi.org/10.48550/arXiv.1503.03226
Journal reference: Phys. Rev. C 91, 054907 (2015)
Related DOI: https://doi.org/10.1103/PhysRevC.91.054907

Submission history

From: Amaresh Jaiswal [view email]
[v1] Wed, 11 Mar 2015 09:08:33 UTC (1,029 KB)
[v2] Mon, 16 Mar 2015 16:33:43 UTC (1,029 KB)
[v3] Tue, 19 May 2015 19:15:53 UTC (1,030 KB)
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