Cosmological models with a time-dependent Λ term

Details Cosmological models with a time-dependent Λ term Cosmological models with a time-dependent Λ term

Apr 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995phrvd..51.4154m&link_type=abstract

Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 51, Issue 8, 15 April 1995, pp.4154-4159

Mathematics

Logic

45

Cosmology

Scientific paper

Cosmological models with a time-dependent Λ term of the form Λ1+Λ2R-m are considered for both dust and noncoherent radiation source terms. A general expression for the age of the Universe in the matter-dominated case is presented and some of its consequences are analyzed. The relevance of constraints imposed by the observed γ-ray flux, the extragalactic background light, and the gravitational lensing phenomena are briefly considered. The Landau-Lifshitz fluctuation theory, as presented by Pavon, is applied to obtain constraints on the allowable set of parameters in the radiation-dominated model.

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