Journal of High Energy Physics

, 2012:101

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


  • Ralph Blumenhagen
    • Max-Planck-Institut für Physik (Werner-Heisenberg-Institut)
    • Max-Planck-Institut für Physik (Werner-Heisenberg-Institut)
    • State Key Laboratory of Theoretical Physics, Institute of Theoretical PhysicsChinese Academy of Sciences
  • Thorsten Rahn
    • Max-Planck-Institut für Physik (Werner-Heisenberg-Institut)
  • Pramod Shukla
    • Max-Planck-Institut für Physik (Werner-Heisenberg-Institut)

DOI: 10.1007/JHEP11(2012)101

Cite this article as:
Blumenhagen, R., Gao, X., Rahn, T. et al. J. High Energ. Phys. (2012) 2012: 101. doi:10.1007/JHEP11(2012)101


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.


Flux compactificationsdS vacua in string theorySuperstring Vacua
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© SISSA, Trieste, Italy 2012