Effect of curvature-squared terms on cosmology

Details Effect of curvature-squared terms on cosmology Effect of curvature-squared terms on cosmology

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981phrvd..24.2555m&link_type=abstract

Physical Review D (Particles and Fields), Volume 24, Issue 10, 15 November 1981, pp.2555-2560

Mathematics

Logic

16

Scientific paper

We consider the effect on Friedmann cosmology of adding all possible algebraic terms quadratic in the curvature tensor to the usual Einstein-Hilbert action for gravitation. Assuming that the vacuum energy density (cosmological constant) is not extraordinarily large in any phase of the evolution of the universe, we find that the cosmological solutions of this more general theory are indistinguishable from standard Friedmann models all the way from the initial singularity to the present.

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