Light-front higher-spin theories in flat space

By Dmitry Ponomarev, E. D. Skvortsov. 2016

204 citations recorded by the source corpus.

We revisit the problem of interactions of higher-spin fields in flat space. We argue that all no-go theorems can be avoided by the light-cone approach, which results in more interaction vertices as compared to the usual covariant approaches. It is stressed that there exist two-derivative gravitational couplings of higher-spin fields. We show that some reincarnation of the equivalence principle still holds for higher-spin fields—the strength of gravitational interaction does not depend on spin. Moreover, it follows from the results by Metsaev that there exists a complete chiral higher-spin theory in four dimensions. We give a simple derivation of this theory and show that the four-point scattering amplitude vanishes. Also, we reconstruct the quartic vertex of the scalar field in the unitary higher-spin theory, which turns out to be perturbatively local.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/3cd97df39da66e621dc58ecd76e3cce89fe4bf9a

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In Astronomy and Astrophysics

1. E. Pajer
2. A. Joyce
3. Hayden Lee
4. C. D. Pueyo
5. G. L. Pimentel
6. D. Baumann
7. Yi Wang
8. Xingang Chen

In Nuclear and High Energy Physics

1. E. Pajer
2. A. Joyce
3. C. D. Pueyo
4. Hayden Lee
5. D. Baumann
6. G. L. Pimentel
7. Yi Wang
8. Liam McAllister

Citations in the corpus

• The Cosmological Bootstrap: Spinning correlators from symmetries and factorization (2020, methodology): “The constraints imposed by Ward identities were analyzed within this formalism in [91].”