Cosmological Constant and Gravitational Repulsion Effect: 1. Homogeneous models with radiation

Details Cosmological Constant and Gravitational Repulsion Effect: 1. Homogeneous models with radiation Cosmological Constant and Gravitational Repulsion Effect: 1. Homogeneous models with radiation

1993-05-06

arxiv.org/abs/gr-qc/9305005v1

Int.J.Mod.Phys. D2 (1993) 443-450

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

REVTEX, 11 pages, Syracuse University preprint SU-GP-93/5-1

Scientific paper

10.1142/S0218271893000313

Within the framework of the minimum quadratic Poincare gauge theory of gravity in the Riemann-Cartan spacetime we study the influence of gravitational vacuum energy density (a cosmological constant) on the dynamics of various gravitating systems. It is shown that the inclusion of the cosmological term can lead to gravitational repulsion. For some simple cases of spatially homogeneous cosmological models with radiation we obtain non-singular solutions in form of elementary functions and elliptic integrals.

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