Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.282.1397b&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 282, Issue 4, pp. 1397-1406.
Astronomy and Astrophysics
Astronomy
27
Cosmology: Theory
Scientific paper
We formulate and study the problem of varying G in Newtonian gravitation and cosmology. Exact solutions and all asymptotic cosmological behaviours are found for universes with G~t^-n. Generalizations of Meshcherskii's theorem are proved for universes containing a perfect-fluid equation of state. The inequivalence of a positive cosmological constant and a p=-rho stress is investigated when G varies and limits are placed on the rate of decrease of G(t) in order for de Sitter expansion to be attained as t-->∞. The conditions for more general forms of inflationary universes to occur are determined and new forms of inflation are found. These results are related to the more complicated systems of equations governing scalar-tensor gravity theories, their solutions and conformal properties.
No associations
LandOfFree
Time-varying G does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Time-varying G, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time-varying G will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1137712