Non-perturbative moduli superpotential with positive exponents

Details Non-perturbative moduli superpotential with positive exponents Non-perturbative moduli superpotential with positive exponents

2008-04-21

arxiv.org/abs/0804.3229v2

Phys.Rev.D78:025007,2008

Physics

High Energy Physics

High Energy Physics - Theory

13 pages, 4 figures, v2: reference added

Scientific paper

10.1103/PhysRevD.78.025007

We study non-perturbative moduli superpotentials with positive exponents, i.e. the form like $Ae^{aT}$ with a positive constant $a$ and the modulus $T$. These effects can be generated, e.g., by D-branes which have negative RR charge of lower dimensional D-brane. The scalar potentials including such terms have a quite rich structure. There are several local minima with different potential energies and a high barrier, whose height is of ${\cal O}(M_p^4)$. We discuss their implications from the viewpoints of cosmology and particle phenomenology, e.g. the realization of inflation models, avoiding the overshooting problem. This type of potentials would be useful to realize the inflation and low-energy supersymmetry breaking.

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