76 citations · 151 across the 4 of their papers we have counts for
5 papers
Phantom behavior via cosmological creation of particles
Rafael C. Nunes, Diego Pavón
Recent determinations of the equation of state of dark energy hint that this may well be of the phantom type, i.e., . If confirmed by future experiments, this would st…
Entropy evolution of universes with initial and final de Sitter eras
José Pedro Mimoso, Diego Pavón
This brief report studies the behavior of entropy in two recent models of cosmic evolution by J.A.S. Lima, S. Basilakos, and F.E.M. Costa [Phys. Rev. D \underline{86}, 103534 (2012…
Parameterizing the Deceleration Parameter
Diego Pavón, Ivan Duran, Sergio del Campo +1
We propose and constrain with the latest observational data three parameterizations of the deceleration parameter, valid from the matter era to the far future. They are well behave…
Why we need dark energy
Diego Pavón, Ninfa Radicella
It is argued that dark energy -or something dynamically equivalent at the background level- is necessary if the expanding universe is to behave as an ordinary macroscopic system; t…
Inhomogeneous Exact Solutions with Varying Cosmological Term
Luis P. Chimento, Diego Pavón
We study the evolution of LTB Universe models possessing a varying cosmological term and a material fluid.