5 papers
Dark energy and dissipation
Diego Pavon, Luis P. Chimento, Alejandro S. Jakubi
Most of the models leading to a current state of cosmic accelerated expansion fail to address the coincidence problem, i.e., that the dark energy density and the energy density of…
Exact Lemaitre-Tolman-Bondi solutions for matter-radiation decoupling
Robertp A. Sussman, Diego Pavon
A new class of solutions of Einstein's equations is derived providing a physically plausible hydrodynamic description of cosmological matter in the radiation era of the Universe ex…
Quintessence Energy and Dissipation
Luis P. Chimento, Alejandro S. Jakubi, Diego Pavon
The combined effect of a dissipative fluid and quintessence energy can simultaneously drive an accelerated expansion phase at the present time and solve the coincidence problem of…
Quintessence inhomogeneous cosmology
Luis P. Chimento, Alejandro S. Jakubi, Diego Pavon
The Einstein-Klein-Gordon field equations are solved in a inhomogeneous shear-free universe containing a material fluid, a self-interacting scalar field, a variable cosmological te…
The Case for Hyperbolic Theories of Dissipation in Relativistic Fluids
Angelo M. Anile, Diego Pavon, Vittorio Romano
In this paper we highlight the fact that the physical content of hyperbolic theories of relativistic dissipative fluids is, in general, much broader than that of the parabolic ones…