activity
20012013
most citedEarly-universe constraints on a time-varying fine structure constant

134 citations · 290 across the 5 of their papers we have counts for

collaborators

5 papers

astro-ph.CO2013★ 9 cited

Biased cosmological parameter estimation with galaxy cluster counts in the presence of primordial non-Gaussianities

A. M. M. Trindade, P. P. Avelino, P. T. P. Viana

The redshift dependence of the abundance of galaxy clusters is very sensitive to the statistical properties of primordial density perturbations. It can thus be used to probe small…

astro-ph.CO2011★ 5 cited

A new signature of primordial non-Gaussianities from the abundance of galaxy clusters

A. M. M. Trindade, P. P. Avelino, P. T. P. Viana

The evolution with time of the abundance of galaxy clusters is very sensitive to the statistical properties of the primordial density perturbations. It can thus be used to probe sm…

astro-ph2003★ 85 cited

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…

astro-ph2002★ 57 cited

Measuring in the Early Universe: CMB Temperature, Large-Scale Structure and Fisher Matrix Analysis

C. J. A. P. Martins, A. Melchiorri, R. Trotta +4

We extend our recent work on the effects of a time-varying fine-structure constant in the cosmic microwave background, by providing a thorough analysis of the degeneracies betw…

astro-ph2001★ 134 cited

Early-universe constraints on a time-varying fine structure constant

P. P. Avelino, S. Esposito, G. Mangano +6

Higher-dimensional theories have the remarkable feature of predicting a time (and hence redshift) dependence of the `fundamental' four dimensional constants on cosmological timesca…