D terms from D-branes, gauge invariance and moduli stabilization in flux compactifications

Details D terms from D-branes, gauge invariance and moduli stabilization in flux compactifications D terms from D-branes, gauge invariance and moduli stabilization in flux compactifications

2006-02-13

arxiv.org/abs/hep-th/0602120v2

JHEP0603:087,2006

Physics

High Energy Physics

High Energy Physics - Theory

1+31 pages, 1 figure

Scientific paper

10.1088/1126-6708/2006/03/087

We elucidate the structure of D terms in N=1 orientifold compactifications with fluxes. As a case study, we consider a simple orbifold of the type-IIA theory with D6-branes at angles, O6-planes and general NSNS, RR and Scherk-Schwarz geometrical fluxes. We examine in detail the emergence of D terms, in their standard supergravity form, from an appropriate limit of the D-brane action. We derive the consistency conditions on gauged symmetries and general fluxes coming from brane-localized Bianchi identities, and their relation with the Freed-Witten anomaly. We extend our results to other N=1 compactifications and to non-geometrical fluxes. Finally, we discuss the possible role of U(1) D terms in the stabilization of the untwisted moduli from the closed string sector.

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