1k citations · 2.5k across the 16 of their papers we have counts for
4 papers · 2 filters
Topological Defects in Contracting Universes
P. P. Avelino, C. J. A. P. Martins, C. Santos +1
We study the behaviour and consequences of cosmic string networks in contracting universes. They approximately behave during the collapse phase as a radiation fluids. Scaling solut…
Cosmic Numbers: A Physical Classification for Cosmological Models
P. P. Avelino, C. J. A. P. Martins
We introduce the notion of the cosmic numbers of a cosmological model, and discuss how they can be used to naturally classify models according to their ability to solve some of the…
Alternatives to Quintessence Model Building
P. P. Avelino, L. M. G. Beca, J. P. M. de Carvalho +2
We discuss the issue of toy model building for the dark energy component of the universe. Specifically, we consider two generic toy models recently proposed as alternatives to quin…
Topological defects: A problem for cyclic universes?
P. P. Avelino, C. J. A. P. Martins, C. Santos +1
We study the behaviour of cosmic string networks in contracting universes, and discuss some of their possible consequences. We note that there is a fundamental time asymmetry betwe…