7 papers
Quantum corrections to the near-extremal thermodynamics of (warped) BTZ black holes
Emilie Despontin, Stéphane Detournay, Robinson Mancilla +1
We study one-loop effects in the near-extremal thermodynamics of BTZ and warped BTZ black holes, with particular emphasis on the fate of eigenmodes that become zero modes in the ex…
Universal sectors of two-dimensional Carrollian CFTs
Ankit Aggarwal, Arjun Bagchi, Stephane Detournay +3
We revisit modular invariance in two-dimensional Carrollian conformal field theories from a geometric perspective. Focusing on the characters of the induced and highest-weight repr…
Infinite-dimensional symmetries in plane wave spacetimes
Emilie Despontin, Stéphane Detournay, Dima Fontaine
We study the asymptotic symmetries of the Nappi-Witten spacetime in four dimensions, a plane wave arising as the Penrose limit of AdS. Imposing suitable boundary cond…
Photon rings in a holographic toy model
Stéphane Detournay, Sahaja Kanuri, Alexandru Lupsasca +3
Light circling around an astrophysical black hole can spend a long time skirting its unstably bound photon orbits before escaping to infinity. To a distant observer, this orbiting…
Anisotropic conformal Carroll field theories and their gravity duals
Emilie Despontin, Stephane Detournay, Sudipta Dutta +1
We investigate anisotropic conformal Carroll field theories and their holographic duals. On the field theory side, we focus on the case with scaling exponent in two and three…
TsT, and black strings
Luis Apolo, Stephane Detournay, Wei Song
We study the relationship between TsT transformations, marginal deformations of string theory on AdS backgrounds, and irrelevant deformations of 2d CFTs. We show that TsT trans…