Vendredi 30 octobre 2015 à 14h15
Auditoire Stueckelberg, Ecole de Physique

Searching for Cosmic Strings in New Observational Windows

Robert Brandenberger, McGill University

Cosmic strings are topologically stable solutions of the field equations in a large class of particle physics models beyond the "Standard Model". If Nature is described by such a model, then a network of cosmic strings inevitably forms in the early universe and survives to the present time. The gravitational effects of these strings lead to unique signatures in cosmological windows such as CMB temperature and polarization maps and 21cm redshift surveys. I will discuss some of these signals.