132 citations · 1.2k across the 41 of their papers we have counts for
5 papers · 1 filter
Soft theorems for boosts and other time symmetries
Lam Hui, Austin Joyce, Ilia Komissarov +3
We derive soft theorems for theories in which time symmetries -- symmetries that involve the transformation of time, an example of which are Lorentz boosts -- are spontaneously bro…
An analytic approach to quasinormal modes for coupled linear systems
Lam Hui, Alessandro Podo, Luca Santoni +1
Quasinormal modes describe the ringdown of compact objects deformed by small perturbations. In generic theories of gravity that extend General Relativity, the linearized dynamics o…
Black hole superradiance with (dark) matter accretion
Lam Hui, Y. T. Albert Law, Luca Santoni +3
Studies of black hole superradiance often focus on the growth of a cloud in isolation, accompanied by the spin-down of the black hole. In this paper, we consider the additional eff…
Integrating out beyond tree level and relativistic superfluids
Austin Joyce, Alberto Nicolis, Alessandro Podo +1
We revisit certain subtleties of renormalization that arise when one derives a low-energy effective action by integrating out the heavy fields of a more complete theory. Usually th…
Near-Zone Symmetries of Kerr Black Holes
Lam Hui, Austin Joyce, Riccardo Penco +2
We study the near-zone symmetries of a massless scalar field on four-dimensional black hole backgrounds. We provide a geometric understanding that unifies various recently discover…