Cosmological solution in Brans-Dicke theory involving particle creation

Details Cosmological solution in Brans-Dicke theory involving particle creation Cosmological solution in Brans-Dicke theory involving particle creation

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.155..233t&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 155, no. 2, May 1989, p. 233-240.

Statistics

Computation

2

Computational Astrophysics, Cosmology, Particle Production, Astronomical Models, Curvature, Gravitation Theory, Space-Time Functions

Scientific paper

By considering the Robertson-Walker line element exact cosmological solutions have been obtained by taking spin-half-generated particles as matter sources in the Jordan-Brans-Dicke theory. There exist exact solutions for which the 'gravitational constant' decreases linearly with time and the mass of the universe increases proportionally to the square of its age while the density decreases with time. The results have been studied corresponding to the three values of curvature index. It has been shown that the expansion law is determined by the particles created by the expansion itself.

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