Amaresh Jaiswal, Rajeev S. Bhalerao, Subrata Pal
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 dissipative relativistic 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.
View original:
http://arxiv.org/abs/1204.3779
No comments:
Post a Comment