Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1998-07-29
Class.Quant.Grav. 15 (1998) 3259-3270
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
16 pages, latex, uses ioplppt.sty. To appear in Class. Quantum Grav
Scientific paper
10.1088/0264-9381/15/10/026
The particles of a classical relativistic gas are supposed to move under the influence of a quasilinear (in the particle four-momenta), self-interacting force inbetween elastic, binary collisions. This force which is completely fixed by the equilibrium conditions of the gas, gives rise to an effective viscous pressure on the fluid phenomenological level. Earlier results concerning the possibility of accelerated expansion of the universe due to cosmological particle production are reinterpreted. A phenomenon such as power law inflation may be traced back to specific self-interacting forces keeping the particles of a gas universe in states of generalized equilibrium.
Balakin Alexander B.
Zimdahl Winfried
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