Chaotic Inflation in Supergravity with Heisenberg Symmetry

Details Chaotic Inflation in Supergravity with Heisenberg Symmetry Chaotic Inflation in Supergravity with Heisenberg Symmetry

2009-05-06

arxiv.org/abs/0905.0905v2

Phys.Lett.B679:428-432,2009

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, 1 figure; reference added; version published in PLB

Scientific paper

10.1016/j.physletb.2009.08.022

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.

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