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Buchmueller, Wilfried; Domcke, Valerie; Wieck, Clemens
Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)2013
Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)2013
AbstractAbstract
[en] We study the consistency of hybrid inflation and moduli stabilization, using the Kallosh- Linde model as an example for the latter. We find that F-term hybrid inflation is not viable since inflationary trajectories are destabilized by tachyonic modes. On the other hand, D-term hybrid inflation is naturally compatible with moduli stabilization due to the absence of a large superpotential term during the inflationary phase. Our model turns out to be equivalent to superconformal D-term inflation and it therefore successfully accounts for the CMB data in the large-field regime. Supersymmetry breaking can be incorporated via an O'Raifeartaigh model. For GUT-scale inflation one obtains a stringent bound on the gravitino mass. A rough estimate yields m3/2>or similar 105 GeV, contrary to naive expectation.
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Sep 2013; 14 p; ISSN 0418-9833; 

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