The Λ2 limit of massive gravity

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Title: The Λ2 limit of massive gravity
Authors: De Rham, C
Tolley, AJ
Zhou, SY
Item Type: Journal Article
Abstract: Lorentz-invariant massive gravity is usually associated with a strong coupling scale Λ3. By including non-trivial effects from the St¨uckelberg modes, we show that about these vacua, one can push the strong coupling scale to higher values and evade the linear vDVZ-discontinuity. For generic parameters of the theory and generic vacua for the St¨uckelberg fields, the Λ2-decoupling limit of the theory is well-behaved and free of any ghost or gradient-like instabilities. We also discuss the implications for nonlinear sigma models with Lorentzian target spaces.
Issue Date: 29-Apr-2016
Date of Acceptance: 22-Apr-2016
ISSN: 1126-6708
Publisher: Springer Verlag
Journal / Book Title: Journal of High Energy Physics
Volume: 2016
Issue: 4
Copyright Statement: © 2016 The Author(s). Open Access. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0, which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Sponsor/Funder: Office of Science of the Department of Energy
Funder's Grant Number: DE-SC0009946
Keywords: Nuclear & Particles Physics
01 Mathematical Sciences
02 Physical Sciences
Publication Status: Published
Open Access location:
Article Number: 188
Appears in Collections:Physics
Theoretical Physics

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