Special Issue "Viscous Cosmology"
Deadline for manuscript submissions: 30 September 2020.
Interests: physics; cosmology; astronomy; philosophy of physics
Interests: electrodynamics in continuous media; Casimir effect; cosmology; fluid dynamics
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The Standard Cosmological Model is a strong idealization of the real Universe. It is assumed that spatial Universe is homogeneous and isotropic (with the Friedmann-Robertson-Walker symmetry) in which effects of dissipation are neglected at very beginning. One of the ways to question this idealization is to include effects of dissipation in the form of bulk viscosity.
Eckart (1940) introduced viscous contributions to the stress-energy tensor in his formulation of a relativistic theory of dissipative processes. At first this approach was used to avoid the initial singularity in the FRW cosmology. Nowadays, simple models of bulk viscosity, i.a., allow to study the effect of isotropic expansion on the thermodynamic properties of fluids and offer a phenomenological description of particle creation in the presence of strong gravitational fields.
Two main directions are looked upon here for a better understanding the role of viscosity in cosmology:
- The search for a description of bulk viscosity to have a better insight in the context of general relativity and cosmology.
- The study of cosmological models with dissipation effects where bulk viscosity is considered as a candidate for dark energy component of unsubstantial nature.
The purpose of the present Special Issue, entitled “Viscous Cosmology”, is the presentation of new ideas, methods of description of viscosity and its role in a cosmic evolution for better understanding of nature of dissipation in general relativity and cosmology.
Prof. Dr. Marek Szydłowski
Prof. Dr. Iver H. Brevik
Manuscript Submission Information
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