New relativistic dissipative fluid dynamics from kinetic theory

Details New relativistic dissipative fluid dynamics from kinetic theory New relativistic dissipative fluid dynamics from kinetic theory

2012-04-17

arxiv.org/abs/1204.3779v2

Physics

Nuclear Physics

Nuclear Theory

4 pages, 2 figures, Equations and figures corrected

Scientific paper

Starting with the relativistic Boltzmann equation where the collision term is generalized to include nonlocal effects, and using Grad's 14-moment approximation for the single-particle distribution function, we derive equations for the relativistic dissipative fluid dynamics. We compare them with the corresponding equations obtained in the standard Israel-Stewart and related approaches. Our method generates all the second-order terms that are allowed by symmetry, some of which have been missed by the traditional approaches, and the coefficients of other terms are altered. The first-order or Navier-Stokes equations too get modified. Significance of these findings is demonstrated in the framework of one-dimensional Bjorken scaling expansion of the matter formed in relativistic heavy-ion collisions.

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