Causal viscous universe coupled with zero-mass scalar field in higher derivative theory

Details Causal viscous universe coupled with zero-mass scalar field in higher derivative theory Causal viscous universe coupled with zero-mass scalar field in higher derivative theory

Jul 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ap%26ss.334..187s&link_type=abstract

Astrophysics and Space Science, Volume 334, Issue 1, pp.187-191

Astronomy and Astrophysics

Astrophysics

3

Viscous Fluid, Zero-Mass Scalar Field And Higher Derivative Theory

Scientific paper

Cosmological solutions in the presence of an imperfect fluid and zero-mass scalar field are obtained in higher derivative theory. We investigate both power law and exponential expansion of the universe described by full causal theories proposed by Israel and Stewart. It is observed that energy density, co-efficient of bulk viscosity decrease with time in the presence of massless scalar field and temperature increase with expansion of universe.

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