4k citations · 21.1k across the 144 of their papers we have counts for
144 papers
Microcausality without Lorentz invariance
Lam Hui, Alberto Nicolis, Alessandro Podo +1
Microcausality -- the vanishing of commutators outside the lightcone -- is a fundamental property of relativistic quantum field theories. We derive its implications for two-point f…
Symmetries of Vanishing Nonlinear Love Numbers of Schwarzschild Black Holes
Oscar Combaluzier-Szteinsznaider, Lam Hui, Luca Santoni +2
The tidal Love numbers parametrize the conservative induced tidal response of self-gravitating objects. It is well established that asymptotically-flat black holes in four-dimensio…
-matrix positivity without Lorentz invariance: a case study
Lam Hui, Ioanna Kourkoulou, Alberto Nicolis +2
We investigate the analytic structure of scattering amplitudes in theories in which Lorentz invariance is spontaneously broken. We do so by computing and studying the S-matrix for…
Relativistic drag forces on black holes from scalar dark matter clouds of all sizes
Dina Traykova, Rodrigo Vicente, Katy Clough +4
We use numerical simulations of scalar field dark matter evolving on a moving black hole background to confirm the regime of validity of (semi-)analytic expressions derived from fi…
Ladder Symmetries of Black Holes and de Sitter Space: Love Numbers and Quasinormal Modes
Roman Berens, Lam Hui, Zimo Sun
In this note, we present a synopsis of geometric symmetries for (spin 0) perturbations around (4D) black holes and de Sitter space. For black holes, we focus on static perturbation…
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…