Non-singular De Sitter universe in R + R-squared - R Lambda gravity

Details Non-singular De Sitter universe in R + R-squared - R Lambda gravity Non-singular De Sitter universe in R + R-squared - R Lambda gravity

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ap%26ss.193...95b&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 193, no. 1, July 1992, p. 95-98. Research supported by CONACYT and DGICSA

Astronomy and Astrophysics

Astrophysics

Cosmology, Gravitation Theory, Relativistic Theory, Space-Time Functions, Astronomical Models, Einstein Equations, Quantum Theory, Supergravity

Scientific paper

A restricted class of higher-derivative theories described by a certain action is investigated. It is shown that, for higher derivative theories described by the action S containing only an R-squared term and the cosmological constant Lambda, an exact de Sitterlike model is obtained. For the FRW metric with zero curvature, its behavior for a given radius of the universe is derived. If the metric is conformally flat, S could describe a consistent quantum theory and its classical solutions would correspond to cosmological models in this theory.

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