The heat flux from a relativistic kinetic equation with a simplified collision kernel

Details The heat flux from a relativistic kinetic equation with a simplified collision kernel The heat flux from a relativistic kinetic equation with a simplified collision kernel

2009-01-06

arxiv.org/abs/0901.0590v1

AIP Conf.Proc.1122:388-391,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages, one figure. To appear in the AIP conference proceedings of the XXXI Spanish Relativity Meeting: Physics and Mathemati

Scientific paper

10.1063/1.3141333

We show how using a special relativistic kinetic equation with a BGK- like collision operator the ensuing expression for the heat flux can be casted in the form required by Classical Irreversible Thermodynamics. Indeed, it is linearly related to the temperature and number density gradients and not to the acceleration as the so-called "first order in the gradients theories" contend. Here we calculate explicitly the ensuing transport coefficients and compare them with the results obtained by other authors.

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