More about F-term uplifting

Hiroyuki Abe, Tetsutaro Higaki, Tatsuo Kobayashi

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52 Citations (Scopus)

Abstract

We study moduli stabilization and a realization of de Sitter vacua in generalized F-term uplifting scenarios of the Kachru-Kallosh-Linde-Trivedi-type anti-de Sitter vacuum, where the uplifting sector X directly couples to the light Kähler modulus T in the superpotential through, e.g., stringy instanton effects. F-term uplifting can be achieved by a spontaneous supersymmetry breaking sector, e.g., the Polonyi model, the O'Raifeartaigh model, and the Intriligator-Seiberg-Shih model. Several models with the X-T mixing are examined, and qualitative features in most models even with such mixing are almost the same as those in the Kachru-Kallosh-Linde-Trivedi scenario. One of the quantitative changes, which are relevant to the phenomenology, is a larger hierarchy between the modulus mass mT and the gravitino mass m3/2, i.e., mT/m3/2=O(a2), where a∼4π2. In spite of such a large mass, the modulus F term is suppressed not like FT=O(m3/2/a2), but like FT=O(m3/2/a) for ln (MPl/m3/2)∼a, because of an enhancement factor coming from the X-T mixing. Then we typically find a mirage-mediation pattern of gaugino masses of O(m3/2/a), while the scalar masses would be generically of O(m3/2).

Original languageEnglish
Article number105003
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume76
Issue number10
DOIs
Publication statusPublished - 2007 Nov 5
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Mathematical Physics

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