Soft supersymmetry breaking in KKLT flux compactification
Mar, 2005
27 pages
Published in:
- Nucl.Phys.B 718 (2005) 113-133
e-Print:
- hep-th/0503216 [hep-th]
Report number:
- IFT-05-05,
- KAIST-TH-2005-04,
- DESY-05-052
Citations per year
Abstract:
We examine the structure of soft supersymmetry breaking terms in KKLT models of flux compactification with low energy supersymmetry. Moduli are stabilized by fluxes and nonperturbative dynamics while a de Sitter vacuum is obtained by adding supersymmetry breaking anti-branes. We discuss the characteristic pattern of mass scales in such a set-up as well as some features of 4D N=1 supergravity breakdown by anti-branes. Anomaly mediation is found to always give an important contribution and one can easily arrange for flavor-independent soft terms. In its most attractive realization, the modulus mediation is comparable to the anomaly mediation, yielding a quite distinctive sparticle spectrum. In addition, the axion component of the modulus/dilaton superfield dynamically cancels the relative CP phase between the contributions of anomaly and modulus mediation, thereby avoiding dangerous SUSY CP violation.Note:
- minor corrections, references added, version accepted in NPB Report-no: IFT-05-05, KAIST-TH 2005/04, DESY-05-052
- 04.65.+e
- 11.25.-w
- string model
- supersymmetry: symmetry breaking
- compactification: flux
- fermion: flavor
- supergravity
- membrane model: D-brane
- membrane model: p-brane
- p-brane: 3
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