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astro-ph2002
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…
astro-ph2001
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…
astro-ph2000
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…