Abstract
Using carefully chosen projections, we consider different Carroll limits of relativistic Dirac fermions in any spacetime dimensions. These limits define Carroll fermions of two types: electric and magnetic. The latter type transforms as a reducible but indecomposable representation of the Carroll group. We also build action principles for all Carroll fermions we introduce; in particular, in even dimensions we provide an action principle for a minimal magnetic Carroll fermion, having the same number of components as a Dirac spinor. We then explore the coupling of these fermions to magnetic Carroll gravity in both its first-order and second-order formulations.
Original language | English |
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Article number | 153 |
Pages (from-to) | 1-22 |
Number of pages | 22 |
Journal | SciPost Physics |
Volume | 16 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2024 |