Non-perturbative effective interactions from fluxes
Abstract
Motivated by possible implications on the problem of moduli stabilization and other phenomenological aspects, we study D-brane instanton effects in flux compactifications. We focus on a local model and compute non-perturbative interactions generated by gauge and stringy instantons in a N = 1 quiver theory with gauge group U(N_0) x U(N_1) and matter in the bifundamentals. This model is engineered with fractional D3-branes at a C^3/(Z_2 x Z_2) singularity, and its non-perturbative sectors are described by introducing fractional D-instantons. We find a rich variety of instanton-generated F- and D-term interactions, ranging from superpotentials and Beasley-Witten like multi-fermion terms to non-supersymmetric flux-induced instanton interactions.
Cite
@article{arxiv.0807.4098,
title = {Non-perturbative effective interactions from fluxes},
author = {M. Billo' and L. Ferro and M. Frau and F. Fucito and A. Lerda and J. F. Morales},
journal= {arXiv preprint arXiv:0807.4098},
year = {2008}
}
Comments
37 pages, 7 figures. Final version published on JHEP. Section 4 modified in several points regarding string corrections in absence of fluxes; in particular, section 4.3 is removed. Some other minor changes and two references added