Vendredi 21 mars 2014 à 14h15
Auditoire Stueckelberg, Ecole de Physique

Cosmic inflation meets particle physics

Stefan Antusch, Eötvös Loránd University, Budapest, Hungary

The quest for a more fundamental theory of matter, forces and the universe drives the continuous effort in elementary particle physics and cosmology to probe and extend the present knowledge, described by the so-called Standard Model of elementary particles and the Concordance Model in socmology. Towards a mode fundamental theory, we discuss possible connections between particle theories and cosmic inflation. In cosmic inflation, the universe undergoes a phase of accelerated (exponential) expansion in its very early stage, which creates the right initial conditions for its later evolution. Particularly close connections between cosmic inflation and particle physics are possible within the framework of supersymmetric tribrid inflation where the inflaton, i.e. the particle responsible for the inflationary dynamics, resides in the matter sector of the particle theory.