Columbia University

output

19912026

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2021 · hep-thShow all

7 papers · 2 filters

hep-th2021★ 11 cited

Characters, quasinormal modes, and Schwinger pairs in $d S_{2}$ 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 $U (1)$ field on $S^{2}$ , is given in terms of $S O (1, 2)$ Ha…

hep-th2021★ 42 cited

Effective Field Theory for the Perturbations of a Slowly Rotating Black Hole

Lam Hui, Alessandro Podo, Luca Santoni +1

We develop the effective theory for perturbations around black holes with scalar hair, in two directions. First, we show that the scalar-Gauss--Bonnet theory, often used as an exam…

hep-th2021★ 44 cited

Large power spectrum and primordial black holes in the effective theory of inflation

Guillermo Ballesteros, Sebastián Céspedes, Luca Santoni

We study the generation of a large power spectrum, necessary for primordial black hole formation, within the effective theory of single-field inflation. The mechanisms we consider…

hep-th2021★ 97 cited

Ladder Symmetries of Black Holes: Implications for Love Numbers and No-Hair Theorems

Lam Hui, Austin Joyce, Riccardo Penco +2

It is well known that asymptotically flat black holes in general relativity have a vanishing static, conservative tidal response. We show that this is a result of linearly realized…

hep-th2021★ 12 cited

Euclidean Twistor Unification

Peter Woit

Taking Euclidean signature space-time with its local Spin(4)=SU(2)xSU(2) group of space-time symmetries as fundamental, one can consistently gauge one SU(2) factor to get a chiral…

hep-th2021★ 2 cited

Mass and spin for classical strings in $d S_{3}$

Klaas Parmentier

We demonstrate that all rigidly rotating strings with center of mass at the origin of the $d S_{3}$ static patch satisfy the Higuchi bound. This extends the observation of Noumi et al…

hep-th2021★ 3 cited

A technical analog of the cosmological constant problem and a solution thereof

Ioanna Kourkoulou, Alberto Nicolis, Guanhao Sun

The near vanishing of the cosmological constant is one of the most puzzling open problems in theoretical physics. We consider a system, the so-called framid, that features a techni…

Characters, quasinormal modes, and Schwinger pairs in dS2​ with flux