Article

Journal of High Energy Physics

, 2012:101

Moduli stabilization and inflationary cosmology with poly-instantons in type IIB orientifolds

  • Ralph BlumenhagenAffiliated withMax-Planck-Institut für Physik (Werner-Heisenberg-Institut)
  • , Xin GaoAffiliated withMax-Planck-Institut für Physik (Werner-Heisenberg-Institut)State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences Email author 
  • , Thorsten RahnAffiliated withMax-Planck-Institut für Physik (Werner-Heisenberg-Institut)
  • , Pramod ShuklaAffiliated withMax-Planck-Institut für Physik (Werner-Heisenberg-Institut)

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Abstract

Equipped with concrete examples of Type IIB orientifolds featuring polyinstanton corrections to the superpotential, the effects on moduli stabilization and inflationary cosmology are analyzed. Working in the framework of the LARGE volume scenario, the Kähler modulus related to the size of the four-cycle supporting the poly-instanton contributes sub-dominantly to the scalar potential. It is shown that this Kähler modulus gets stabilized and, by displacing it from its minimum, can play the role of an inflaton. Subsequent cosmological implications are discussed and compared to experimental data.

Keywords

Flux compactifications dS vacua in string theory Superstring Vacua