The Relaxation Effect in Dissipative Relativistic Fluid Theories

Author: Lindblom L.  

Publisher: Elsevier

ISSN: 0003-4916

Source: Annals of Physics, Vol.247, Iss.1, 1996-04, pp. : 1-18

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Abstract

The dynamics of the fluid fields in a large class of causal dissipative fluid theories is studied. It is shown that the physical fluid states in these theories must relax (on a time scale that is characteristic of the microscopic particle interactions) to ones that are essentially indistinguishable from the simple relativistic Navier-Stokes descriptions of these states. Thus, for example, in the relaxed form of a physical fluid state the stress energy tensor is in effect indistinguishable from a perfect fluid stress tensor plus small dissipative corrections proportional to the shear of the fluid velocity, the gradient of the temperature, etc.