Inflation and reheating in Bianchi type-IX cosmology

Details Inflation and reheating in Bianchi type-IX cosmology Inflation and reheating in Bianchi type-IX cosmology

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985phrvd..31..718z&link_type=abstract

Physical Review D (Particles and Fields), Volume 31, Issue 4, 15 February 1985, pp.718-724

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Other Topics In General Relativity And Gravitation

Scientific paper

Within the framework of the Bianchi type-IX homogeneous space, we set up a system of coupled equations for the cosmic scale factors, scalar field, and radiative energy density. At the tree level, the equations are written in a self-consistent, Hartree-Fock form. For φ4 theory, the system of nine first-order differential equations is solved numerically for a varying ratio of the energy of anisotropy to the vacuum energy. As the vacuum energy increases, there appears to be less reheating, since the energy of anisotropy is more efficiently converted into isotropic expansion. If the energy of anisotropy is large enough, the inflationary phase is prevented. In this case, a series of cosmological phase transitions will take place each time the square of the effective mass changes its sign.

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