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  Looking for partially-massless gravity

Joung, E., Mkrtchyan, K., & Poghosyan, G. (2019). Looking for partially-massless gravity. Journal of High Energy Physics, 2019 (7): 116. doi:10.1007/JHEP07(2019)116.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0003-6568-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-76C3-B
Genre: Journal Article

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 Creators:
Joung, Euihun, Author
Mkrtchyan, Karapet1, Author              
Poghosyan, Gabriel, Author
Affiliations:
1Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24014              

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Free keywords: High Energy Physics - Theory, hep-th
 Abstract: We study the possibility for a unitary theory of partially-massless (PM) spin-two field interacting with Gravity in arbitrary dimensions. We show that the gauge and parity invariant interaction of PM spin two particles requires the inclusion of specific massive spin-two fields and leads to a reconstruction of Conformal Gravity, or multiple copies of the latter in even dimensions. By relaxing the parity invariance, we find a possibility of a unitary theory in four dimensions, but this theory cannot be constructed in the standard formulation, due to the absence of the parity-odd cubic vertex therein. Finally, by relaxing the general covariance, we show that a `non-geometric' coupling between massless and PM spin-two fields may lead to an alternative possibility of a unitary theory. We also clarify some aspects of interactions between massless, partially-massless and massive fields, and resolve disagreements in the literature.

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 Dates: 2019-04-112019
 Publication Status: Published in print
 Pages: 45 pages
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 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1904.05915
URI: http://arxiv.org/abs/1904.05915
DOI: 10.1007/JHEP07(2019)116
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Title: Journal of High Energy Physics
Source Genre: Journal
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Pages: - Volume / Issue: 2019 (7) Sequence Number: 116 Start / End Page: - Identifier: -