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Causality Constraints on Corrections to the Graviton Three-Point Coupling

Camanho, X. O., Edelstein, J. D., Maldacena, J., & Zhiboedov, A. (2016). Causality Constraints on Corrections to the Graviton Three-Point Coupling. Journal of high energy physics: JHEP, 2016(02): 020. doi:10.1007/JHEP02(2016)020.

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Genre: Journal Article

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1407.5597.pdf (Preprint), 707KB
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### Creators

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Creators:
Camanho, Xian O.1, Author
Edelstein, Jose D., Author
Maldacena, Juan, Author
Zhiboedov, Alexander, 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,General Relativity and Quantum Cosmology, gr-qc
Abstract: We consider higher derivative corrections to the graviton three-point coupling within a weakly coupled theory of gravity. Lorentz invariance allows further structures beyond the one present in the Einstein theory. We argue that these are constrained by causality. We devise a thought experiment involving a high energy scattering process which leads to causality violation if the graviton three-point vertex contains the additional structures. This violation cannot be fixed by adding conventional particles with spins $J \leq 2$. But, it can be fixed by adding an infinite tower of extra massive particles with higher spins, $J > 2$. In AdS theories this implies a constraint on the conformal anomaly coefficients $\left|{a - c \over c} \right| \lesssim {1 \over \Delta_{gap}^2}$ in terms of $\Delta_{gap}$, the dimension of the lightest single particle operator with spin $J > 2$. For inflation, or de Sitter-like solutions, it indicates the existence of massive higher spin particles if the gravity wave non-gaussianity deviates significantly from the one computed in the Einstein theory.

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Dates: 2014-07-212016
Publication Status: Published in print
Pages: 50+22 pages, 13 figures
Publishing info: -
Rev. Method: -
Identifiers: arXiv: 1407.5597
DOI: 10.1007/JHEP02(2016)020
Degree: -

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### Source 1

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Title: Journal of high energy physics : JHEP
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 2016 (02) Sequence Number: 020 Start / End Page: - Identifier: ISSN: 1126-6708
CoNE: /journals/resource/111021927548002