Multicomponent perfect fluid with variable parameters in n Ricci-flat spaces

Details Multicomponent perfect fluid with variable parameters in n Ricci-flat spaces Multicomponent perfect fluid with variable parameters in n Ricci-flat spaces

2004-05-24

arxiv.org/abs/gr-qc/0405120v1

J.Korean Phys.Soc. 45 (2004) S148-S154

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

12 pages

Scientific paper

D-dimensional cosmological model describing the evolution of a multicomponent perfect fluid with variable barotropic parameters in n Ricci-flat spaces is investigated. The equations of motion are integrated for the case, when each component possesses an isotropic pressure with respect to all spaces. Exact solutions are presented in the Kasner-like form. Some explicit examples are given: 4-dimensional model with an isotropic accelerated expansion at late times and (4+d)-dimensional model describing a compactification of extra dimensions.

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