Cosmological Scalar in the Jordan-Brans-Dicke Theory. I

Details Cosmological Scalar in the Jordan-Brans-Dicke Theory. I Cosmological Scalar in the Jordan-Brans-Dicke Theory. I

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ap.....48..381a&link_type=abstract

Astrophysics, Volume 48, Issue 3, pp.381-388

Mathematics

Logic

Cosmology, Scalar-Tensor Theory, Cosmological Solutions, Cosmology - Scalar-Tensor Theory - Cosmological Solutions

Scientific paper

A variant of the Jordan-Brans-Dicke (JBD) theory is examined which contains a cosmological scalar that is written so that on going to the Einstein representation it becomes the ordinary cosmological constant of general relativity theory. This paper is divided into two parts. In Part I we examine the cosmological solutions for the Einstein representation of the JBD theory, i.e., in the presence of a minimally coupled scalar field. In Part II we shall study the cosmological solutions in the proper representation of the JBD theory with a self consistent scalar field. The analysis of these solutions is of interest in connection with modern concepts of the evolution of the universe, in particular, with the observed acceleration of cosmological expansion and estimates of the density of dark matter and dark energy.

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