Carroll swiftons
Florian Ecker, Daniel Grumiller, Marc Henneaux, Patricio, Salgado-Rebolledo

TL;DR
This paper develops Carroll-invariant field theories with superluminal propagation, introducing Carroll swiftons, and explores their coupling to gravity, resulting in dynamical torsion in two-dimensional models.
Contribution
It constructs the first scalar and vector Carroll swifton theories and demonstrates their coupling to gravity, revealing new geometric effects like dynamical torsion.
Findings
Carroll swiftons propagate outside the lightcone
Coupling to gravity induces dynamical torsion
Scalar swifton models are achieved in two-dimensional gravity
Abstract
We construct Carroll-invariant theories with fields propagating outside the Carroll lightcone, i.e., at a speed strictly greater than zero (`Carroll swiftons'). We first consider models in flat Carroll spacetime in general dimensions, where we present scalar and vector Carroll swifton field theories. We then turn to the coupling to gravity and achieve in particular in two dimensions a Carroll invariant scalar swifton by coupling it suitably to Carroll dilaton gravity. Its backreaction on the geometry generates dynamical torsion.
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Taxonomy
TopicsCosmology and Gravitation Theories · Black Holes and Theoretical Physics · Relativity and Gravitational Theory
