Work

Extracting edge modes: Reduction of 3D and 2D gravities

Year: 2025

Type: article

Abstract: We investigate the boundary reduction of 3D Einstein gravity and Jackiw-Teitelboim gravity into their respective edge mode theories—namely, the Liouville and Alekseev-Shatashvili, and Schwarzian models. By examining the roles of boundary conditions, canonical transformations, and differing formulations—metric versus Chern-Simons—we clarify how physical degrees of freedom become localized at the boundary and resolve several longstanding ambiguities in the reduction procedure.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/bgjv-m11w

Authors: Euihun Joung, Sejin Kim

Institution: Kyung Hee University

Language: English

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: National Research Foundation, National Research Foundation of Korea, Ministry of Science and ICT, South Korea

Award: G8274573714