Towards Matter Inflation in Heterotic String Theory

Antusch, Stefan and Dutta, Koushik and Erdmenger, Johanna and Halter, Sebastian. (2011) Towards Matter Inflation in Heterotic String Theory. Journal of High Energy Physics, 1104. 065.

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Recently, a class of inflation models in supergravity with gauge non-singlet matter fields as the inflation has been proposed. It is based on a ‘tribrid’ structure in the superpotential and on a ‘Heisenberg symmetry’ for solving the η-problem. We suggest that a generalization of this model class may be suitable for realising inflation in heterotic orbifold compactifications, where the Heisenberg symmetry is a property of the tree-level Kähler potential of untwisted matter fields. We discuss moduli stabilization in this setup and propose a mechanism to stabilize the modulus associated to the inflation, which respects the symmetry in the large radius limit. Inflation ends via a `waterfall' phase transition, as in hybrid inflation. We give conditions which have to be satisfied for realising inflation along these lines in the matter sector of heterotic orbifolds.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik (Antusch)
UniBasel Contributors:Antusch, Stefan
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:30 Jan 2017 09:32
Deposited On:30 Jan 2017 09:32

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