68 citations · 440 across the 18 of their papers we have counts for
7 papers · 1 filter
Measuring in the Early Universe: CMB Polarization, Reionization and the Fisher Matrix Analysis
G. Rocha, R. Trotta, C. J. A. P. Martins +4
We present a detailed analysis of present and future Cosmic Microwave Background constraints of the value of the fine-structure constant, . We carry out a more detailed analysis…
New constraints on varying
G. Rocha, R. Trotta, C. J. A. P. Martins +3
We present a summary of recent constraints on the value of the fine-structure constant at the epoch of decoupling from the recent observations made by the Wilkinson Microwave Aniso…
The Limit of the Generalized Chaplygin Gas Scenario
P. P. Avelino, L. M. G. Beca, J. P. M. de Carvalho +1
We explicitly demonstrate that, contrary to recent claims, the dynamics of a generalized Chaplygin gas model with an equation of state (where is a positive constant) is…
The onset of the non-linear regime in unified dark matter models
P. P. Avelino, L. M. G. Beca, J. P. M. de Carvalho +2
We discuss the onset of the non-linear regime in the context of unified dark matter models involving a generalised Chaplygin gas. We show that the transition from dark matter-like…
Cosmological perturbations and the reionization epoch
Pedro P Avelino, Andrew R Liddle
We investigate the dependence of the epoch of reionization on the properties of cosmological perturbations, in the context of cosmologies permitted by WMAP. We compute the redshift…
The Role of Baryons in Unified Dark Matter Models
L. M. G. Beca, P. P. Avelino, J. P. M. de Carvalho +1
We discuss the importance of including baryons in analyses of unified dark matter scenarios, focusing on toy models involving a generalized Chaplygin gas. We determine observationa…