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Cubic interactions of massless bosonic fields in three dimensions

Mkrtchyan, K. (2018). Cubic interactions of massless bosonic fields in three dimensions. Physical Review Letters, 120: 221601. doi:10.1103/PhysRevLett.120.221601.

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Creators:
Mkrtchyan, Karapet1, Author
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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: Parity-even cubic vertices of massless bosons of arbitrary spins in three dimensional Minkowski space are classified in the metric-like formulation. As opposed to higher dimensions, there is at most one vertex for any given triple $s_1,s_2,s_3$ in three dimensions. All the vertices with more than three derivatives are of the type $(s,0,0)$, $(s,1,1)$ and $(s,1,0)$ involving scalar and/or Maxwell fields. All other vertices contain two (three) derivatives, when the sum of the spins is even (odd). Minimal coupling to gravity, $(s,s,2)$, has two derivatives and is universal for all spins (equivalence principle holds). Minimal coupling to Maxwell field, $(s,s,1)$, distinguishes spins $s\leq 1$ and $s\geq 2$ as it involves one derivative in the former case and three derivatives in the latter case. Some consequences of this classification are discussed.

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Dates: 2017-12-282018
Publication Status: Published in print
Pages: 18 pages
Publishing info: -
Rev. Method: -
Identifiers: arXiv: 1712.10003
URI: http://arxiv.org/abs/1712.10003
DOI: 10.1103/PhysRevLett.120.221601
Degree: -

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Title: Physical Review Letters
Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 120 Sequence Number: 221601 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1