Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 1, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP01(2012)002
Keywords
Supersymmetry Breaking; Extended Supersymmetry; Supergravity Models; Anomalies in Field and String Theories
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Funding
- European Programme Unification in the LHC Era [PITN-GA-2009-237920]
- Fondazione Cariparo Excellence
- ERC [267985, 228169]
- Padova University [CPDA105015/10]
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We clarify a number of issues on Fayet-Iliopoulos (FI) terms in supergravity, keeping the formalism at a minumum and making use of explicit examples. We explain why, if the U(1) vector is massive everywhere in field space, FI terms are not genuine and can always be redefined away or introduced when they are not present. We formulate a simple anomaly-free model with a genuine FI term, a classically stable de Sitter (dS) vacuum and no global symmetries. We explore the relation between N = 2 and N = 1 FI terms by discussing N = 1 truncations of N = 2 models with classically stable dS vacua.
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