Towards Matter Inflation in Heterotic String Theory

Autor:	Antusch, Stefan, Dutta, Koushik, Erdmenger, Johanna, Halter, Sebastian
Rok vydání:	2011
Předmět:	High Energy Physics - Theory Astrophysics - Cosmology and Extragalactic Astrophysics High Energy Physics - Phenomenology
Zdroj:	JHEP 1104:065,2011
Druh dokumentu:	Working Paper
DOI:	10.1007/JHEP04(2011)065
Popis:	Recently, a class of inflation models in supergravity with gauge non-singlet matter fields as the inflaton has been proposed. It is based on a `tribrid' structure in the superpotential and on a Heisenberg symmetry for solving the eta-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 K"ahler potential of untwisted matter fields. We discuss moduli stabilization in this setup and propose a mechanism to stabilize the modulus associated to the inflaton, 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. Comment: PDFLaTeX, 41 pages, 7 PDF figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1102.0093 Zobrazit plný text záznamu View this record from Arxiv