期刊
PHYSICS LETTERS B
卷 688, 期 2-3, 页码 137-141出版社
ELSEVIER
DOI: 10.1016/j.physletb.2010.04.005
关键词
Massive gravity; Degravitation; Extra dimensions
资金
- NSERC
- Ontario's MRI
We propose an explicit non-linear realization of massive gravity, which relies on the introduction of a spurious compact extra dimension, on which we impose half-Newmann and half-Dirichlet boundary conditions. At the linearized level, we recover the expected gravitational exchange amplitude between two sources mediated by a massive Fierz-Pauli spin-2 field, while cubic interactions in the additional helicity-0 mode give rise to the expected Vainshtein mechanism. We also show that this framework can accommodate for a flat four-dimensional geometry in the presence of a cosmological constant, putting this framework on a good footing for the study of degravitation. (C) 2010 Elsevier B.V. All rights reserved.
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