Large-field inflation and supersymmetry breaking

Buchmüller, Wilfried; Heurtier, Lucien; Dudas, Emilian; Wieck, Clemens

doi:10.1007/JHEP09(2014)053

Report/Journal Article

PUBDB-2014-03735

Large-field inflation and supersymmetry breaking

Buchmüller, W. (Corresponding Author)DESY* ; Dudas, E.Extern* ; Heurtier, L. ; Wieck, C.Extern*DESY*

2014
Springer Berlin

Journal of high energy physics 2014(9), 53 (2014) [10.1007/JHEP09(2014)053]

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Please use a persistent id in citations: doi:10.1007/JHEP09(2014)053

Report No.: CPHT-RR037.0614; DESY-14-100

Abstract: Large-field inflation is an interesting and predictive scenario. Its non-trivial embedding in supergravity was intensively studied in the recent literature, whereas its interplay with supersymmetry breaking has been less thoroughly investigated. We consider the minimal viable model of chaotic inflation in supergravity containing a stabilizer field, and add a Polonyi field. Furthermore, we study two possible extensions of the minimal setup. We show that there are various constraints: first of all, it is very hard to couple an O'Raifeartaigh sector with the inflaton sector, the simplest viable option being to couple them only through gravity. Second, even in the simplest model the gravitino mass is bounded from above parametrically by the inflaton mass. Therefore, high-scale supersymmetry breaking is hard to implement in a chaotic inflation setup. As a separate comment we analyze the simplest chaotic inflation construction without a stabilizer field, together with a supersymmetrically stabilized Kahler modulus. Without a modulus, the potential of such a model is unbounded from below. We show that a heavy modulus cannot solve this problem.

Keyword(s): Cosmology of Theories beyond the SM (LCSH) ; Supersymmetry Breaking (LCSH) ; inflation: chaos ; supersymmetry: symmetry breaking ; gravitation: model ; mass: gravitation ; inflaton: mass ; gravitino: mass ; stability ; supergravity ; embedding ; Kaehler