3 papers
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-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…
gr-qc1999
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…