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Causality in 3D massive gravity theories
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Date
2017-05-12
Author
Edelstein, Jose D.
Giribet, Gaston
Gomez, Carolina
Kilicarslan, Ercan
Leoni, Matias
Tekin, Bayram
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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We study the constraints coming from the local causality requirement in various 2 + 1 dimensional dynamical theories of gravity. In topologically massive gravity, with a single parity noninvariant massive degree of freedom, and in new massive gravity, with two massive spin-2 degrees of freedom, causality and unitarity are compatible with each other and both require the Newton's constant to be negative. In their extensions, such as the Born-Infeld gravity and the minimal massive gravity the situation is similar and quite different from their higher dimensional counterparts, such as quadratic (e.g., Einstein-Gauss-Bonnet) or cubic theories, where causality and unitarity are in conflict. We study the problem both in asymptotically flat and asymptotically anti-de Sitter spaces.
URI
https://hdl.handle.net/11511/35821
Journal
PHYSICAL REVIEW D
DOI
https://doi.org/10.1103/physrevd.95.104016
Collections
Department of Physics, Article