F-theory flux, destabilization of orientifolds and soft terms on D7-branes
Jan, 2005
62 pages
Published in:
- Nucl.Phys.B 732 (2006) 243-290
e-Print:
- hep-th/0501139 [hep-th]
Report number:
- LMU-ASC-1-05,
- MPP-2005-3
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Abstract:
We use F-theory to derive a general expression for the flux potential of type II compactifications with D7/D3 branes, including open string moduli and 2-form fluxes on the branes. Our main example is F-theory on K3 K3 and its orientifold limit T^2/Z_2 x K3. The full scalar potential cannot be derived from the bulk superpotential W=\int \Omega \wedge G_3 and generically destabilizes the orientifold. Generically all open and closed string moduli are fixed, except for a volume factor. An alternative formulation of the problem in terms of the effective supergravity is given and we construct an explicit map between the F-theory fluxes and gaugings. We use the superpotential to compute the effective action for flux compactifications on orbifolds, including the \mu-term and soft-breaking terms on the D7-brane world-volume.- F-theory
- membrane model: D-brane
- membrane model: p-brane
- p-brane: 7
- p-brane: 3
- orientifold
- superpotential
- stability
- effective action
- supergravity
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