Bonn 2010 – scientific programme
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T: Fachverband Teilchenphysik
T 23: Theoretische Astroteilchenphysik und Kosmologie I
T 23.3: Talk
Wednesday, March 17, 2010, 14:30–14:45, HG XV
Sneutrino Inflation in GUTs — Stefan Antusch1, Mar Bastero-Gil2, •Jochen P. Baumann1, Koushik Dutta1, Steve F. King3, and Philipp M. Kostka1 — 1Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), München, Germany — 2Departamento de Fisica Teorica y del Cosmos and Centro Andaluz de Fisica de Particulas Elementales, Universidad de Granada, Granada, Spain — 3School of Physics and Astronomy, University of Southampton, Southampton, United Kingdom
We discuss sneutrino inflation in SUSY GUTs, in particular in Pati-Salam and SO(10). Since under these gauge groups the right-handed sneutrino is no longer a singlet, several problems arise. Not being a singlet, the scalar potential of the sneutrino in general receives large D-term contributions, which would violate the slow-roll conditions. Furthermore, with a charged inflaton problematic effects at the one- and two-loop level might arise, which again threaten the flatness of the potential. Additionally the problem of the production of stable topologic defects has to be addressed. We present a simple model of sneutrino inflation in Pati-Salam and discuss the aforementioned problems in this framework. Furthermore, we discuss the prospects of embedding such a model into SO(10).