19 citations · 83 across the 12 of their papers we have counts for
12 papers
CFTs on Squashed Spheres and the Thermal Effective Action
Klaas Parmentier, Nikolay Bobev
We study three-dimensional CFTs on compact Euclidean manifolds in two complementary limits: small deformations of the round and the small-fiber, large-squashing limit of Seif…
Quasinormal modes and complexity in saddle-dominated SU(N) spin systems
Sergio E. Aguilar-Gutierrez, Yichao Fu, Kuntal Pal +1
We study SU() spin systems that mimic the behavior of particles in -dimensional de Sitter space for . Their Hamiltonians describe a dynamical system with hyperbolic fi…
Coherent spin states and emergent de Sitter quasinormal modes
Klaas Parmentier
As a toy model for the microscopic description of matter in de Sitter space, we consider a Hamiltonian acting on the spin-j representation of SU(2). This is a model with a finite-d…
Apparently superluminal superfluids
Ioanna Kourkoulou, Michael J. Landry, Alberto Nicolis +1
We consider the superfluid phase of a specific renormalizable relativistic quantum field theory. We prove that, within the regime of validity of perturbation theory and of the supe…
Low-temperature thermal corrections to a superfluid's equation of state
Ioanna Kourkoulou, Alberto Nicolis, Klaas Parmentier
Using effective field theory methods, we calculate the low-temperature phonon thermal partition function for a generic superfluid, thus providing the leading thermal corrections to…
Black Hole Horizon Edge Partition Functions
Manvir Grewal, Y. T. Albert Law, Klaas Parmentier
We extend a formula for 1-loop black hole determinants by Denef, Hartnoll, and Sachdev (DHS) to spinning fields on any -dimensional static spherically symmetric black hole.…
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…
Towards an "AdSCFT" correspondence from the DD system?
Sergio E. Aguilar-Gutierrez, Klaas Parmentier, Thomas Van Riet
We argue that a type IIB Euclidean supergravity solution of the form with imaginary self-dual flux through be…
Black Hole Scattering and Partition Functions
Y. T. Albert Law, Klaas Parmentier
When computing the ideal gas thermal canonical partition function for a scalar outside a black hole horizon, one encounters the divergent single-particle density of states (DOS) du…
Characters, quasinormal modes, and Schwinger pairs in with flux
Manvir Grewal, Klaas Parmentier
An integral representation of the 1-loop partition function for charged scalars and spinors, minimally coupled to a uniform field on , is given in terms of Ha…
Mass and spin for classical strings in
Klaas Parmentier
We demonstrate that all rigidly rotating strings with center of mass at the origin of the static patch satisfy the Higuchi bound. This extends the observation of Noumi et al…
Holographic Uniformization and Black Hole Attractors
Nikolay Bobev, Fridrik Freyr Gautason, Klaas Parmentier
We establish an attractor mechanism for the horizon metric of asymptotically locally AdS4 supersymmetric black holes. The Kähler moduli of the metric are not fixed in the asymptoti…