On the effective inertial mass density of a dissipative fluid

Abstract

It is shown that the effective inertial mass density of a dissipative fluid just after leaving the equilibrium, on a time scale of the order of relaxation time, reduces by a factor which depends on dissipative variables. Prospective applications of this result to cosmological and astrophysical scenarios are discussed.

10 pages Latex, to appear in Phys. Lett. A

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