Exact solutions in string-motivated scalar-field cosmology

Details Exact solutions in string-motivated scalar-field cosmology Exact solutions in string-motivated scalar-field cosmology

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phrvd..45..997o&link_type=abstract

Physical Review D, vol. 45, Issue 4, pp. 997-999

Mathematics

Logic

27

Particle-Theory And Field-Theory Models Of The Early Universe

Scientific paper

Two exact cosmological solutions to a scalar-field potential motivated by six-dimensional (6D) Einstein-Maxwell theory are given. The resulting pure scalar-field cosmology is free of singularity and causality problems but conserves entropy. These solutions are then extended into exact cosmological solutions for a decaying scalar field with an approximate two-loop 4D string potential. The resulting cosmology is, for both solutions, free of cosmological problems and close to the standard cosmology of the radiation era.

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