On the quasi-isotropic solution in the presence of ultrarelativistic matter and a scalar field

Details On the quasi-isotropic solution in the presence of ultrarelativistic matter and a scalar field On the quasi-isotropic solution in the presence of ultrarelativistic matter and a scalar field

Mar 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cqgra..16..723m&link_type=abstract

Classical and Quantum Gravity, Volume 16, Issue 3, pp. 723-730 (1999).

Mathematics

Logic

4

Scientific paper

In this paper we analyse, in the asymptotic limit to the cosmological singularity, the quasi-isotropic universe dynamics in the presence of ultrarelativistic matter and a real self-interacting scalar field. In particular, we show that the presence of the scalar field kinetic term allows the existence of a quasi-isotropic solution characterized by an arbitrary spatial dependence of the energy density associated with the ultrarelativistic matter. In other words, in the leading order, there is no direct relation between the isotropy of the universe and the homogeneity of the ultrarelativistic matter distributed within it.

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