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Supersymmetry breaking and inflation from higher curvature supergravity

By I. Dalianis, F. Farakos, Alexandros Kechagias, Antonio Walter Riotto and R. Unge

Abstract

The generic embedding of the R + R 2 higher curvature theory into old-minimal supergravity leads to models with rich vacuum structure in addition to its well-known inflationary properties. When the model enjoys an exact R-symmetry, there is an inflationary phase with a single supersymmetric Minkowski vacuum. This appears to be a special case of a more generic set-up, which in principle may include R-symmetry violating terms which are still of pure supergravity origin. By including the latter terms, we find new supersymmetry breaking vacua compatible with single-field inflationary trajectories. We discuss explicitly two such models and we illustrate how the inflaton is driven towards the supersymmetry breaking vacuum after the inflationary phase. In these models the gravitino mass is of the same order as the inflaton mass. Therefore, pure higher curvature supergravity may not only accommodate the proper inflaton field, but it may also provide the appropriate hidden sector for supersymmetry breaking after inflation has ended

Topics: info:eu-repo/classification/ddc/500.2, Supersymmetry Breaking, Cosmology of Theories beyond the SM, Superspaces, Supergravity Models
Publisher: 'Springer Science and Business Media LLC'
Year: 2015
DOI identifier: 10.1007/JHEP01(2015)043
OAI identifier: oai:unige.ch:unige:73690
Provided by: Archive ouverte UNIGE
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