Open string wavefunctions in flux compactifications

Details Open string wavefunctions in flux compactifications Open string wavefunctions in flux compactifications

2009-06-17

arxiv.org/abs/0906.3033v3

Physics

High Energy Physics

High Energy Physics - Theory

89 pages, 4 figures. v3: more typos corrected, version published in JHEP

Scientific paper

We consider compactifications of type I supergravity on manifolds with SU(3) structure, in the presence of RR fluxes and magnetized D9-branes, and analyze the generalized Dirac and Laplace-Beltrami operators associated to the D9-brane worldvolume fields. These compactifications are T-dual to standard type IIB toroidal orientifolds with NSNS and RR 3-form fluxes and D3/D7 branes. By using techniques of representation theory and harmonic analysis, the spectrum of open string wavefunctions can be computed for Lie groups and their quotients, as we illustrate with explicit twisted tori examples. We find a correspondence between irreducible unitary representations of the Kaloper-Myers algebra and families of Kaluza-Klein excitations. We perform the computation of 2- and 3-point couplings for matter fields in the above flux compactifications, and compare our results with those of 4d effective supergravity.

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