String-driven anisotropic cosmological models

Details String-driven anisotropic cosmological models String-driven anisotropic cosmological models

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.155..335l&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 155, no. 2, May 1989, p. 335-339. Research supported by DFG.

Statistics

Computation

4

Anisotropy, Astronomical Models, Cosmology, String Theory, Computational Astrophysics, Field Theory (Physics), Ideal Fluids

Scientific paper

The Bianchi type I and type V solutions of the string-driven anisotropic cosmological space times are constructed for the case in the presence of perfect fluid matter with bulk viscosity and a nonvanishing cosmological constant. It is found that string-induced bulk viscosity increases the mean radius attained in one cycle and increases the cyclic period. Efforts using string theory to explain the observed vanishing of the cosmological constant are reviewed.

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