1209.2107 (Nora Bretón et al.)

Observational constraints on electromagnetic Born-Infeld cosmology    [PDF]

Nora Bretón, Ruth Lazkoz, Ariadna Montiel

The cosmological model consisting of an electromagnetic Born-Infeld (BI) field coupled to a Robertson-Walker geometry is tested with the standard probes of SNIa, GRBs and direct Hubble parameter. The analysis shows that the inclusion of the nonlinear electromagnetic component does not contribute in a significative way to the observed expansion. The BI electromagnetic matter is considered with an abundance of $\Omega_{BI}$, that our best fit leads to $\Omega_{BI}=0.037$ when tested with SNIa and the Hubble parameter data (0.1View original: http://arxiv.org/abs/1209.2107