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T: Fachverband Teilchenphysik

T 23: Theoretische Astroteilchenphysik und Kosmologie 2

T 23.1: Vortrag

Dienstag, 10. März 2009, 16:45–17:00, M114

Solving the η - Problem in Hybrid Inflation with Heisenberg Symmetry and Stabilized Modulus — Stefan Antusch¹, Mar Bastero-Gil², Koushik Dutta¹, Steve King³, and •Philipp Kostka¹ — ¹Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), Föhringer Ring 6, 80805 München, Germany — ²Departamento de Fisica Teorica y del Cosmos and Centro Andaluz de Fisica de Particulas Elementales, Universidad de Granada, 19071 Granada, Spain — ³School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, United Kingdom

We present a new class of models in which the η-problem of supersymmetric hybrid inflation is resolved using a Heisenberg symmetry, where the associated modulus field is stabilized and made heavy with the help of the large vacuum energy during inflation without any fine-tuning. A natural candidate for the inflaton in this class of models is the right-handed sneutrino which is massless during the inflationary epoch, and subsequently acquires a large mass at the end of inflation.