Physics Letters B (Oct 2023)

The N=2 superconformal gravitino multiplet

  • Daniel Hutchings,
  • Sergei M. Kuzenko,
  • Emmanouil S.N. Raptakis

DOI
https://doi.org/10.1016/j.physletb.2023.138132
Journal volume & issue
Vol. 845
p. 138132

Abstract

Read online

We propose a new gauge prepotential ϒi describing the four-dimensional N=2 superconformal gravitino multiplet. The former naturally arises via a superspace reduction of the N=3 conformal supergravity multiplet. A locally superconformal chiral action for ϒi, which is gauge-invariant in arbitrary conformally flat backgrounds, is derived. This construction readily yields a new superprojector, which maps an isospinor superfield Ψi to a multiplet characterised by the properties of a conformal supercurrent associated with ϒi. Our main results are also specialised to N=2 anti-de Sitter superspace.