Gravitational energy in Brans-Dicke cosmological models.

Details Gravitational energy in Brans-Dicke cosmological models. Gravitational energy in Brans-Dicke cosmological models.

Feb 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999prama..52..121j&link_type=abstract

Pramāna, Vol. 52, No. 2, p. 121 - 126

Mathematics

Logic

Cosmological Models: Brans-Dicke Theory

Scientific paper

The behaviour of gravitational energy and scalar field during the evolution of the universe within the framework of Brans-Dicke theory has been discussed. With help of the Landau-Lifshitz pseudo-tensor for the flat Friedmann-Robertson-Walker model, it is found that (1) the total energy of the universe is always zero, (2) the Brans-Dicke scalar field for all ω ≥ 0 contributes energy to the negative energy of the gravitational field and this gets transferred to the vacuum energy which accelerates the expansion of the universe.

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