Abstract
The problem of constructing gauge-invariant actions for conformal higher-spin fields in curved backgrounds is known to be notoriously difficult. In this paper we present gauge-invariant models for conformal maximal depth fields with spin s = 5/2 and s = 3 in four-dimensional Bach-flat backgrounds. We find that certain lower-spin fields must be introduced to ensure gauge invariance when s > 2, which is analogous to a conjecture made earlier in the literature for conformal higher-spin fields of minimal depth.
Original language | English |
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Article number | 21 |
Journal | Journal of High Energy Physics |
Volume | 2020 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1 Apr 2020 |