38 citations · 103 across the 6 of their papers we have counts for
9 papers · 1 filter
WMAP 5-year constraints on time variation of and in a detailed recombination scenario
Claudia G. Scóccola, Susana. J. Landau, Hector Vucetich
We study the role of fundamental constants in an updated recombination scenario. We focus on the time variation of the fine structure constant, and the electron mass in the early U…
Early Universe Constraints on Time Variation of Fundamental Constants
Susana J. Landau, Mercedes E. Mosquera, Claudia G. Scoccola +1
We study the time variation of fundamental constants in the early Universe. Using data from primordial light nuclei abundances, CMB and the 2dFGRS power spectrum, we put constraint…
The time variation of the fine structure constant: A statistical analysis of astronomical data
Susana J. Landau, Claudio Simeone
We analyze different data of the variation of the fine structure constant obtained with different methods to check their consistency.We test consistency using the modified Student…
Time variation of the electron mass in the early universe and the Barrow-Magueijo model
Claudia G. Scóccola, Mercedes E. Mosquera, Susana J. Landau +1
We put limits on the time variation of the electron mass in the early universe using observational primordial abundances of D, He4 and Li7, recent data from the Cosmic Microwave Ba…
Time variation of the fine structure constant in the early universe and the Bekenstein model
Mercedes E. Mosquera, Claudia G. Scoccola, Susana J. Landau +1
We calculate bounds on the variation of the fine structure constant at the time of primordial nucleosynthesis and at the time of neutral hydrogen formation. We use these bounds and…
Helium and Deuterium Abundances as a Test for the Time Variation of the Fine Structure Constant and the Higgs Vacuum Expectation Value
Nidal Chamoun, Susana J. Landau, Mercedes E. Mosquera +1
We use the semi-analytic method of \citet{Esma91} to calculate the abundances of Helium and Deuterium produced during Big Bang nucleosynthesis assuming the fine structure constant…