Branes in JT (super)gravity from group theory

Abstract

In this work, we revisit the end-of-the-world (EOW) brane amplitudes in JT gravity from a BF gauge theoretic perspective. Observing and identifying the correct group theoretic ingredient for a closed EOW brane as a discrete series character, we use the group theory framework as a guide towards formulating the analogous supersymmetric problem. We compute these amplitudes explicitly in the supersymmetric generalizations of JT gravity ($\mathcal{N}=1,2,4$), motivated by the prospective of possibly finite amplitudes. In the process, we develop some of the representation theory of OSp$(2|2,\mathbb{R})$ and PSU($1,1|2)$, relevant for the $\mathcal{N}=2$ and $\mathcal{N}=4$ cases.

68 pages, v2: references added, matches published version

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Cited by in corpus (5)

• The dilaton gravity hologram of double-scaled SYK
• Quantum group origins of edge states in double-scaled SYK
• Gravitational wavefunctions in JT supergravity
• Boundary terms, branes and AdS/BCFT in first-order gravity
• Asymptotics of Weil-Petersson volumes and two-dimensional quantum gravities