Cosmology with bulk pressure

Details Cosmology with bulk pressure Cosmology with bulk pressure

1996-08-12

arxiv.org/abs/astro-ph/9608060v1

Helv.Phys.Acta 69:225-228,1996

Astronomy and Astrophysics

Astrophysics

Talk given at the Journees Relativistes 96, 4 pages, latex

Scientific paper

Different cooling rates of interacting fluid components of the expanding cosmic medium give rise to entropy producing bulk stresses. With the help of effective bulk pressures, on the other hand, one may phenomenologically take into account cosmological particle production processes. We report on recent progress in bulk viscous cosmology both on the phenomenological level and on the level of relativistic kinetic theory.

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