Carroll black holes with an associated Carroll temperature were introduced recently. So far,
it is unclear if they exhibit a Hawking-like effect. To solve this, we study scalar fields on …

Using effective field theory methods, we derive the Carrollian analog of the geodesic action.
We find that it contains both “electric” and “magnetic” contributions that are in general …

This thesis presents the state of the art in the study of Bondi-Metzner-Sachs (BMS) symmetry
and its applications in the simplified setting of three dimensions. It focuses on presenting all …

A bstract Starting from the asymptotic kinematics of massless scalar fields near null infinity in
any spacetime dimension, we build two higher-spin extensions of the Carrollian definition of …

A bstract The conformal symmetry algebra in 2D (Diff (S 1)⊕ Diff (S 1)) is shown to be
related to its ultra/non-relativistic version (BMS 3≈ GCA 2) through a nonlinear map of the …

We discuss some aspects of soft hairy black holes and a new kind of “soft hairy
cosmologies,” including a detailed derivation of the metric formulation, results on flat space …

We construct Carroll-invariant theories with fields propagating outside the Carroll light cone,
ie, at a speed strictly greater than zero (“Carroll swiftons”). We first consider models in flat …

A bstract We derive the characters of all unitary irreducible representations of the (d+ 1)-
dimensional de Sitter spacetime isometry algebra\(\mathfrak {so}\left (1,\kern0. 5em d+ …

We build unitary representations of the BMS algebra and its higher-spin extensions in three
dimensions, using induced representations as a guide. Our prescription naturally emerges …

A bstract In this paper we perform the Hamiltonian reduction of the action for three-
dimensional Einstein gravity with vanishing cosmological constant using the Chern-Simons …