Exact solutions of modified GST cosmology

Details Exact solutions of modified GST cosmology Exact solutions of modified GST cosmology

Jun 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cqgra..18.2087f&link_type=abstract

Classical and Quantum Gravity, Volume 18, Issue 11, pp. 2087-2096 (2001).

Mathematics

Logic

6

Scientific paper

The generalized scalar-tensor (GST) theory is modified. In the modified GST theory, the cosmological term Λ is a function of the scalar field φ and of its time derivative dot phi2 as well. We obtain exact solutions for the scale factor, the scalar field and the cosmological term which evolves with a different dependence on time for each era of the universe. The cosmological `constant' and flatness problems are examined in the simple case of a flat universe.

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