Cosmological models arising from generalized scalar field potentials

Details Cosmological models arising from generalized scalar field potentials Cosmological models arising from generalized scalar field potentials

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cqgra..16.3749c&link_type=abstract

Classical and Quantum Gravity, Volume 16, Issue 11, pp. 3749-3763 (1999).

Mathematics

Logic

11

Scientific paper

We find exact solutions for isotropic cosmological models containing a self-interacting scalar field possessing an interaction potential of a general class. In particular, we consider the combination of exponential potentials arising from a perturbation expansion in superstring theories. We also consider a general class of potentials that give rise to power-law and polynomial chaotic inflation, as well as the intermediate inflationary models. We compute the scalar and tensor perturbations produced in those models and use the exact solutions obtained to examine the consistency of the first-order slow-roll expansion.

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