Viscous fluid cosmological models in the presence of the zero-mass scalar field

Details Viscous fluid cosmological models in the presence of the zero-mass scalar field Viscous fluid cosmological models in the presence of the zero-mass scalar field

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ap%26ss.191..161r&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 191, no. 1, May 1992, p. 161-166. Research supported by Council of Scienti

Mathematics

5

Astronomical Models, Big Bang Cosmology, Einstein Equations, Relativity, Singularity (Mathematics), Baryons, Entropy, Thermodynamic Properties

Scientific paper

The curvature-free (k = 0) FRW expanding cosmological model is developed corresponding to interacting viscous fluids and zero-mass scalar fields. In the absence of nonstatic scalar fields, the model exhibits the existence of the initial singularity (Q = 0). However, with nonnegative coefficient of shear viscosity, in the presence of nonstatic scalar fields, it is found that Q has a minimum value (nonzero). If this epoch is treated as the initial one, it may be said that the presence of scalar fields avoids the initial singularity. Other physical behavior that the model exhibits has been discussed.

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