Recovering the Cosmological Constant in Scalar-Tensor Cosmologies

Details Recovering the Cosmological Constant in Scalar-Tensor Cosmologies Recovering the Cosmological Constant in Scalar-Tensor Cosmologies

Nov 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997gregr..29.1425c&link_type=abstract

General Relativity and Gravitation, Volume 29, Issue 11, p.1425-1444

Mathematics

Logic

15

Scientific paper

We extend the cosmic no-hair theorem to a general class of scalar-tensor nonminimally coupled theories of gravity where ordinary matter is also present in the form of a perfect fluid. We give a set of conditions for obtaining an asymptotic de~Sitter expansion, independently of any initial data, by a sort of time-dependent (effective) cosmological constant. Finally we apply the results to some specific models.

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