74 citations · 177 across the 9 of their papers we have counts for
10 papers
AdS Holography and Effective QFT
Sangmin Choi, Finn Larsen
We discuss AdS quantum gravity from an unconventional perspective that emphasizes bulk geometry. In our approach, AdS has no boundary, there are no divergences that require…
Singular Supertranslations and Chern-Simons Theory on the Black Hole Horizon
Ratindranath Akhoury, Sangmin Choi, Malcolm J. Perry
We construct the standard and dual supertranslation charges on the future horizon of the Schwarzschild black hole, using the first-order formulation of gravity with the Holst actio…
Holography from Singular Supertranslations on a Black Hole Horizon
Ratindranath Akhoury, Sangmin Choi, Malcolm J. Perry
We investigate the standard and dual Bondi-Metzner-Sachs (BMS) supertranslation generators on a black hole horizon and draw some conclusions about black hole physics. Recently, it…
Effective Field Theory of Quantum Black Holes
Sangmin Choi, Finn Larsen
We review and extend recent progress on the quantum description of near-extremal black holes in the language of effective quantum field theory. With black holes in Einstein-Maxwell…
Magnetic Soft Charges, Dual Supertranslations and 't Hooft Line Dressings
Sangmin Choi, Ratindranath Akhoury
We construct the Faddeev-Kulish asymptotic states in a quantum field theory of electric and magnetic charges. We find that there are two kind of dressings: apart from the well know…
Supertranslation Hair of Schwarzschild Black Hole: A Wilson Line Perspective
Sangmin Choi, S. Sandeep Pradhan, Ratindranath Akhoury
We demonstrate within the quantum field theoretical framework that an asymptotic particle falling into the black hole implants soft graviton hair on the horizon, conforming with th…
Subleading soft dressings of asymptotic states in QED and perturbative quantum gravity
Sangmin Choi, Ratindranath Akhoury
We construct Faddeev-Kulish states in QED and perturbative quantum gravity to subleading order in the soft momentum expansion and to first order in the coupling constant, using the…
Soft Photon Hair on Schwarzschild Horizon from a Wilson Line Perspective
Sangmin Choi, Ratindranath Akhoury
We develop a unified framework for the construction of soft dressings at boundaries of spacetime, such as the null infinity of Minkowski spacetime and the horizon of a Schwarzschil…
BMS Supertranslation Symmetry Implies Faddeev-Kulish Amplitudes
Sangmin Choi, Ratindranath Akhoury
We show explicitly that, among the scattering amplitudes constructed from eigenstates of the BMS supertranslation charge, the ones that conserve this charge, are equal to those con…
Asymptotic Dynamics in Perturbative Quantum Gravity and BMS Supertranslations
Sangmin Choi, Uri Kol, Ratindranath Akhoury
Recently it has been shown that infrared divergences in the conventional S-matrix elements of gauge and gravitational theories arise from a violation of the conservation laws assoc…