The Λ2 limit of massive gravity
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Author(s)
de Rham, C
Tolley, AJ
Zhou, SY
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.
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.
Date Issued
2016-04-29
Date Acceptance
2016-04-22
Citation
Journal of High Energy Physics, 2016, 2016 (4)
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 https://creativecommons.org/licenses/by/4.0/), which permits any use, distribution and reproduction in
any medium, provided the original author(s) and source are credited.
Attribution License (CC-BY 4.0 https://creativecommons.org/licenses/by/4.0/), which permits any use, distribution and reproduction in
any medium, provided the original author(s) and source are credited.
Sponsor
Office of Science of the Department of Energy
Grant Number
DE-SC0009946
Subjects
Nuclear & Particles Physics
01 Mathematical Sciences
02 Physical Sciences
Publication Status
Published
Article Number
188