Get started
Work

Holographic duals of JT gravity at finite cutoff: the classical case

Year: 2026
Type: preprint
Abstract: We formulate JT gravity with finite-cutoff boundaries and end-of-the-world branes in the first-order BF formulation. We dynamically reduce the BF model into a one-dimensional system living at the boundaries, generalizing earlier constructions. We obtain in particular a geometrical understanding of the phase space degrees of freedom associated to each of these boundaries. We leverage these results to probe bulk locality and the underlying structure of spacetime. Within our framework, we are able to derive a closed-form expression for the holographic Schwarzian description of JT gravity at finite-cutoff in phase space. The resulting degrees of freedom describe the embedding of the finite-cutoff curve in AdS$_2$. A quantization of these systems is presented in a companion paper.
DOI: 10.48550/arxiv.2610.40391
Institutions: Ghent University, Istituto Nazionale di Fisica Nucleare, Sezione di Firenze, University of Florence, University of Parma, Istituto Nazionale di Fisica Nucleare, Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Parma
Language: English
Open Access status: green
Funders: European Commission, Ministero dell’Istruzione, dell’Università e della Ricerca, Universiteit Gent, Istituto Nazionale di Fisica Nucleare, Ministero dell'Università e della Ricerca, Bijzonder Onderzoeksfonds UGent
OpenAlex ID: W7224970256
Cites:
Cited by:
Related to: 10