Dynamical analysis of a first order theory of bulk viscosity
Giovanni Acquaviva, Aroonkumar Beesham
TL;DR
This paper conducts a comprehensive dynamical systems analysis of curved FRW cosmologies with a viscous fluid governed by a recent first order bulk viscosity theory, revealing stability, thermodynamics, and cosmological implications.
Contribution
It offers the first global analysis of curved FRW models with this specific viscous fluid theory, including stability and thermodynamic properties.
Findings
Identification of stable and unstable critical points.
Insights into thermodynamic behavior of viscous cosmologies.
Implications for the evolution of the universe with bulk viscosity.
Abstract
We perform a global analysis of curved Friedmann-Robertson-Walker cosmologies in the presence of a viscous fluid. The fluid's bulk viscosity is governed by a first order theory recently proposed in [M. M. Disconzi, T. W. Kephart, and R. J. Scherrer, Phys. Rev. D 91, 043532 (2015)], and the analysis is carried out in a compactified parameter space with dimensionless coordinates. We provide stability properties, cosmological interpretation and thermodynamic features of the critical points.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.