Curvature in causal BD-type inflationary cosmology
Francisco Pena, Mauricio Cataldo, Sergio del Campo
TL;DR
This paper explores a cosmological model with curvature, viscous fluids, and quintessence in a Brans-Dicke framework, showing it can mimic an accelerated flat universe and analyzing entropy during viscous inflation.
Contribution
It introduces a causal thermodynamics approach to viscous fluid inflation in a curved universe within Brans-Dicke theory, providing new insights into entropy and acceleration.
Findings
Universe can appear as an accelerated flat universe at low redshift
Dissipative processes are modeled with causal thermodynamics
Total entropy in the observable universe is consistent with accepted values
Abstract
We study a closed model of the universe filled with viscous fluid and quintessence matter components in a Brans-Dicke type cosmological model. The dynamical equations imply that the universe may look like an accelerated flat Friedmann-Robertson-Walker universe at low redshift. We consider here dissipative processes which follow a causal thermodynamics. The theory is applied to viscous fluid inflation, where accepted values for the total entropy in the observable universe is obtained.
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