4 papers
The branching problem in generalized power solutions to differential equations
Alejandro S. Jakubi
Generalized power asymptotic expansions of solutions to differential equations that depend on parameters are investigated. The changing nature of these expansions as the parameters…
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…
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…