1. Symmetries of N $$ \mathcal{N} $$ = (1, 0) supergravity backgrounds in six dimensions
- Author
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Sergei M. Kuzenko, Ulf Lindström, Gabriele Tartaglino-Mazzucchelli, and Emmanouil S. N. Raptakis
- Subjects
Physics ,High Energy Physics - Theory ,Higher Spin Symmetry ,Nuclear and High Energy Physics ,Extended Supersymmetry ,Supergravity ,High Energy Physics::Phenomenology ,FOS: Physical sciences ,General Relativity and Quantum Cosmology (gr-qc) ,Superspace ,General Relativity and Quantum Cosmology ,Superspaces ,Killing vector field ,High Energy Physics::Theory ,High Energy Physics - Theory (hep-th) ,Killing spinor ,Killing tensor ,Homogeneous space ,lcsh:QC770-798 ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,Tensor ,Curved space ,Supergravity Models ,Mathematical physics - Abstract
General $\mathcal{N}=(1,0)$ supergravity-matter systems in six dimensions may be described using one of the two fully fledged superspace formulations for conformal supergravity: (i) $\mathsf{SU}(2)$ superspace; and (ii) conformal superspace. With motivation to develop rigid supersymmetric field theories in curved space, this paper is devoted to the study of the geometric symmetries of supergravity backgrounds. In particular, we introduce the notion of a conformal Killing spinor superfield $\epsilon^\alpha$, which proves to generate extended superconformal transformations. Among its cousins are the conformal Killing vector $\xi^a$ and tensor $\zeta^{a(n)}$ superfields. The former parametrise conformal isometries of supergravity backgrounds, which in turn yield symmetries of every superconformal field theory. Meanwhile, the conformal Killing tensors of a given background are associated with higher symmetries of the hypermultiplet. By studying the higher symmetries of a non-conformal vector multiplet we introduce the concept of a Killing tensor superfield. We also analyse the problem of computing higher symmetries for the conformal d'Alembertian in curved space and demonstrate that, beyond the first-order case, these operators are defined only on conformally flat backgrounds., Comment: 62 pages
- Published
- 2021