Decoupling limits in multi-sector supergravities
Abstract
Conventional approaches to cosmology in supergravity assume the existence of multiple sectors that only communicate gravitationally. In principle these sectors decouple in the limit Planck mass to 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 Planck Mass to infinity.
Keywords
Cite
@article{arxiv.1108.2278,
title = {Decoupling limits in multi-sector supergravities},
author = {Ana Achúcarro and Sjoerd Hardeman and Johannes M. Oberreuter and Koenraad Schalm and Ted van der Aalst},
journal= {arXiv preprint arXiv:1108.2278},
year = {2013}
}
Comments
10 pages; v2, published version, refined wording and clarifying comments throughout, references added