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  Interactions of multiple spin-2 fields beyond pairwise couplings

Hassan, S., & Schmidt-May, A. (2019). Interactions of multiple spin-2 fields beyond pairwise couplings. Physical Review Letters, 122, 251101. Retrieved from https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2018-66.

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https://arxiv.org/pdf/1804.09723.pdf (Any fulltext)
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 Creators:
Hassan, S.F.1, Author
Schmidt-May, Angnis1, Author
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1Max Planck Institute for Physics, Max Planck Society and Cooperation Partners, ou_2253650              

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Free keywords: Theoretical Physics
 Abstract: Thus far, all known ghost-free interactions of multiple spin-2 fields have involved at most pairwise couplings of the fields, which are direct generalizations of bimetric interactions. Here we present a class of spin-2 theories with genuine multi-field interactions, and explicitly demonstrate the absence of ghost instabilities. The construction involves integrating out a nondynamical field in a theory of spin-2 fields with only pairwise ghost-free interactions. The new multi-vierbein interactions generated are not always expressible in terms of the associated metrics.

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 Dates: 2019
 Publication Status: Issued
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Title: Physical Review Letters
  Abbreviation : Phys.Rev.Lett.
Source Genre: Journal
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Pages: - Volume / Issue: 122 Sequence Number: - Start / End Page: 251101 Identifier: -