Journal
PHYSICS LETTERS B
Volume 679, Issue 5, Pages 428-432Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2009.08.022
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Funding
- STFC Rolling [ST/G000557/1]
- EU [MRTN-CT-2004-503369, RII3-CT-2004-506222]
- DFG
- M.E.C. [FIS 2007-63364]
- Junta de Andalucia group [FQM 101]
- STFC [ST/G000557/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/G000557/1] Funding Source: researchfish
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We propose the introduction of a Heisenberg symmetry of the Kahler potential to solve the problems with chaotic inflation in supergravity, as a viable alternative to the use of shift symmetry. The slope of the inflaton potential emerges from a small Heisenberg symmetry breaking term in the superpotential. The modulus field of the Heisenberg symmetry is stabilized and made heavy with the help of the large vacuum energy density during inflation. The observable predictions are indistinguishable from those of typical chaotic inflation models, however the form of the inflationary superpotential considered here may be interpreted in terms of sneutrino inflation arising from certain classes of string theory. (C) 2009 Elsevier B.V. All rights reserved.
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