3d conformal fields with manifest $sl(2,\mathbb{C})$

Abstract

In the present paper we construct all short representation of $so(3,2)$ with the $sl(2,\mathbb{C})$ symmetry made manifest due to the use of $sl(2,\mathbb{C})$ spinors. This construction has a natural connection to the spinor-helicity formalism for massless fields in AdS${}_4$ suggested earlier. We then study unitarity of the resulting representations, identify them as the lowest-weight modules and as conformal fields in the three-dimensional Minkowski space. Finally, we compare these results with the existing literature and discuss the properties of these representations under contraction of $so(3,2)$ to the Poincare algebra.

arXiv comment44 pages, 8 figures; minor corrections, references added, version to appear in JHEP

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• Towards higher-spin holography in flat space
• Superfield approach to interacting N=2 massive and massless supermultiplets in 3d flat space
• Invariant traces of the flat space chiral higher-spin algebra as scattering amplitudes