Viscosity effects in (1 + 1)-dimensional cosmologies

Details Viscosity effects in (1 + 1)-dimensional cosmologies Viscosity effects in (1 + 1)-dimensional cosmologies

Jul 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996cqgra..13.1727c&link_type=abstract

Classical and Quantum Gravity, Volume 13, Issue 7, pp. 1727-1737 (1996).

Mathematics

Logic

3

Scientific paper

We investigate the behaviour of the solutions to the gravitational (1 + 1)-dimensional equations with a viscous fluid source in the case of a Robertson - Walker metric. In our model the bulk viscosity coefficient is related to the energy density as 0264-9381/13/7/006/img1 and we also take into account the effects of a nonlinear viscosity 0264-9381/13/7/006/img2. We find exact solutions of the field equations for several physically interesting cases which include Friedmann cosmologies and the time reversal of Murphy's class of cosmological solutions. We find that the global effect of bulk viscosity is to decrease the expansion rate while the nonlinear viscosity does not qualitatively change the models. On the other hand, the bulk viscosity is able to remove the initial singularities which are present in the corresponding viscosity free models as in the four-dimensional case.

Affiliated with

Also associated with

No associations

Rating

Viscosity effects in (1 + 1)-dimensional cosmologies 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 Viscosity effects in (1 + 1)-dimensional cosmologies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Viscosity effects in (1 + 1)-dimensional cosmologies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1117078