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  DBI Inflation in N=1 Supergravity

Koehn, M., Lehners, J.-L., & Ovrut, B. A. (2012). DBI Inflation in N=1 Supergravity. Physical Review D, 86(12): 123510. doi:10.1103/PhysRevD.86.123510.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0010-0D13-F Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-B376-8
Genre: Journal Article

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1208.0752 (Preprint), 538KB
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 Creators:
Koehn, Michael1, Author              
Lehners, Jean-Luc1, Author              
Ovrut, Burt A., Author
Affiliations:
1String Cosmology, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, Golm, DE, ou_1753351              

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Free keywords: High Energy Physics - Theory, hep-th,Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO
 Abstract: It was recently demonstrated that, when coupled to N=1 supergravity, the Dirac-Born-Infeld (DBI) action constructed from a single chiral superfield has the property that when the higher-derivative terms become important, the potential becomes negative. Thus, DBI inflation cannot occur in its most interesting, relativistic regime. In this paper, it is shown how to overcome this problem by coupling the model to one or more additional chiral supermultiplets. In this way, one obtains effective single real scalar field DBI models with arbitrary positive potentials, as well as multiple real scalar field DBI inflation models with hybrid potentials.

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 Dates: 2012-08-032012-08-092012
 Publication Status: Published in print
 Pages: 23 pages, 1 figure, v2: references added
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1208.0752
DOI: 10.1103/PhysRevD.86.123510
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Title: Physical Review D
  Other : Phys. Rev. D.
Source Genre: Journal
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Publ. Info: Lancaster, Pa. : Published for the American Physical Society by the American Institute of Physics
Pages: - Volume / Issue: 86 (12) Sequence Number: 123510 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: /journals/resource/111088197762258