Inflation with large supergravity corrections

Anupam Mazumdar; Seshadri Nadathur; Philip Stephens

doi:10.1103/PhysRevD.85.045001

Inflation with large supergravity corrections

Anupam Mazumdar, Seshadri Nadathur, Philip Stephens

Institute of Cosmology & Gravitation

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Abstract

It is well known that large Hubble-induced supergravity corrections to the inflaton field can ruin the flatness of the potential, thus creating a tension between slow-roll inflation and supergravity. In this paper we show that it is possible to obtain a cosmologically flat direction, embedded within the minimal supersymmetric standard model, despite very large super-Hubble corrections. As an illustration, we show that a flat direction which is lifted by an n = 6 operator matches the current cosmic microwave background data for a wide range of the Hubble parameter, 10⁵ GeV ≲ H_inf≲ 10^8.5 GeV. Our approach can be applied to any F-term inflationary model.

Original language	English
Article number	045001
Number of pages	5
Journal	Physical Review D
Volume	85
Issue number	4
Early online date	3 Feb 2012
DOIs	https://doi.org/10.1103/PhysRevD.85.045001
Publication status	Published - 15 Feb 2012

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10.1103/PhysRevD.85.045001

PhysRevD.85.045001
Anupam Mazumdar, Seshadri Nadathur, and Philip Stephens, 'Inflation with large supergravity corrections.' Phys. Rev. D 85, 045001. DOI: https://doi.org/10.1103/PhysRevD.85.045001. © 2012 American Physical Society. All rights reserved.
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Inflation with large supergravity corrections

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