We present a Bianchi type-I cosmological model in the Einstein-Cartan theory of gravity. We assume that the Universe is filled in with radiation and nonzero vacuum energy (cosmological constant). Generic initial conditions lead to a nonsingular cosmological model with a finite initial radius. Singularity appears when the anisotropic energy density is greater than or equal to the spin energy density. For sufficiently large times the scale factor grows exponentially. We discuss consequences of our model in a more realistic physical situation.
Inflation in a Bianchi type-I Einstein-Cartan cosmological model / M., Demianski; DE RITIS, Ruggiero; Platania, Giovanni; Scudellaro, Paolo; C., Stornaiolo. - In: PHYSICAL REVIEW D. - ISSN 0556-2821. - STAMPA. - 35:(1987), pp. 1181-1184.
Inflation in a Bianchi type-I Einstein-Cartan cosmological model
DE RITIS, RUGGIERO;PLATANIA, GIOVANNI;SCUDELLARO, PAOLO;
1987
Abstract
We present a Bianchi type-I cosmological model in the Einstein-Cartan theory of gravity. We assume that the Universe is filled in with radiation and nonzero vacuum energy (cosmological constant). Generic initial conditions lead to a nonsingular cosmological model with a finite initial radius. Singularity appears when the anisotropic energy density is greater than or equal to the spin energy density. For sufficiently large times the scale factor grows exponentially. We discuss consequences of our model in a more realistic physical situation.| File | Dimensione | Formato | |
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