Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 3, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2013/03/038
Keywords
inflation; supersymmetry and cosmology; cosmology of theories beyond the SM; particle physics - cosmology connection
Funding
- VIDI Innovative Research Incentive Grant from the Netherlands Organisation for Scientific Research (NWO)
- Netherlands Organisation for Scientific Research (NWO)
- Dutch Foundation for Fundamental Research on Matter (FOM)
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Conventional approaches to cosmology in supergravity assume the existence of multiple sectors that only communicate gravitationally. In principle these sectors decouple in the limit M-pl -> infinity. In practice such a limit is delicate: for generic supergravities, where sectors are combined by adding their Kahler functions, the separate superpotentials must contain non-vanishing vacuum expectation values supplementing the naive global superpotential. We show that this requires non-canonical scaling in the naive supergravity superpotential couplings to recover independent sectors of globally supersymmetric field theory in the decoupling limit Mpl -> infinity.
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