Some consequences of quadratic gravity for the early universe

Details Some consequences of quadratic gravity for the early universe Some consequences of quadratic gravity for the early universe

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ap%26ss.192..141s&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 192, no. 1, June 1992, p. 141-144.

Astronomy and Astrophysics

Astrophysics

1

Big Bang Cosmology, Gravitation, Universe, Asymptotic Properties, Flatness, Gravitation Theory, Horizon

Scientific paper

The modification of general relativity at Planck scales is considered as an alternative to the conventional inflationary scenarios requiring massive scalar fields with very flat potential wells. In particular, attention is given to the hypothesis that at very high energies and, hence, around the Planck epoch in the early universe, gravity is described by an action quadratic in the curvature and asymptotically free in the coupling. It is shown that, within this framework, the flatness and horizon problems can be resolved without invoking inflation.

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