Isotropization of Bianchi class A models with a minimally coupled scalar field and a perfect fluid

Stéphane Fay (1)

1 LUTH (UMR_8102) - Laboratoire Univers et Théories

We look for the necessary conditions allowing the universe isotropization in the presence of a minimally coupled and massive scalar field with a perfect fluid. We conclude that it arises only when the universe is scalar field dominated, leading to flat spacelike sections and accelerated expansion, and examine the case of a SUGRA theory.

Domaines: Astrophysique [astro-ph]

Stéphane Fay. Isotropization of Bianchi class A models with a minimally coupled scalar field and a perfect fluid. Classical and Quantum Gravity, 2004, 21, pp.1609-1621. ⟨10.1088/0264-9381/21/6/020⟩. ⟨hal-03786090⟩