On the microscopic nature of dissipative effects in special relativistic kinetic theory

Details On the microscopic nature of dissipative effects in special relativistic kinetic theory On the microscopic nature of dissipative effects in special relativistic kinetic theory

2010-07-16

arxiv.org/abs/1007.2815v1

Journal of non-equilibrium thermodynamics 37, 4361 (2012)

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

20 pages

Scientific paper

10.1515/jnet.2011.025

A microscopic formulation of the definition of both the heat flux and the viscous stress tensor is proposed in the framework of kinetic theory for relativistic gases emphasizing on the physical nature of such fluxes. A Lorentz transformation is introduced as the link between the laboratory and local comoving frames and thus between molecular and chaotic velocities. With such transformation, the dissipative effects can be identified as the averages of the chaotic kinetic energy and the momentum flux out of equilibrium, respectively. Within this framework, a kinetic foundation of the ensuing transport equations for the relativistic gas is achieved. To our knowledge, this result is completely novel.

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