3 papers
hep-th2019
Memory Effect in Anti-de Sitter Spacetime
Chong-Sun Chu, Yoji Koyama
The geodesic deviation of a pair of test particles is an natural observable for the gravitational memory effect. Nevertheless in curved spacetime, this observable is plagued with v…
hep-th2018
Soft Hair of Dynamical Black Hole and Hawking Radiation
Chong-Sun Chu, Yoji Koyama
Soft hair of black hole has been proposed recently to play an important role in the resolution of the black hole information paradox. Recent work has emphasized that the soft modes…
hep-th2016
Adiabatic Regularization for Gauge Field and the Conformal Anomaly
Chong-Sun Chu, Yoji Koyama
We construct the adiabatic regularization method for a gauge field in a conformally flat spacetime by quantizing in the canonical formalism the gauge fixed theory wit…