Qualitative Viscous Cosmology
A.A. Coley, R.J. van den Hoogen (Dept. of Math, Stats, and Computing, Science, Dalhousie University) R. Maartens (School of Mathematical Studies,, University of Portsmouth)
TL;DR
This paper applies the full Israel--Stewart viscous cosmology theory to dissipative FRW models, analyzing their qualitative behavior and entropy production using autonomous system techniques.
Contribution
It introduces a comprehensive analysis of viscous cosmology using the complete Israel--Stewart theory, providing new insights into the dynamics of dissipative universe models.
Findings
Identification of equilibrium points and their stability
Characterization of entropy production in viscous cosmologies
Insights into the qualitative evolution of dissipative FRW universes
Abstract
The Full (non--truncated) Israel--Stewart theory of bulk viscosity is applied to dissipative FRW spacetimes. Dimensionless variables and dimensionless equations of state are used to write the Einstein--thermodynamic equations as a plane autonomous system and the qualitative behaviour of this system is determined. Entropy production in these models is also discussed.
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