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Eigenbranes in Jackiw-Teitelboim gravity

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arxiv 1911.11603 v2 pith:L3SSYEXL submitted 2019-11-26 hep-th

Eigenbranes in Jackiw-Teitelboim gravity

classification hep-th
keywords gravityboundarieseigenvaluesensemblematricesversionbehaviorcapture
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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It was proven recently that JT gravity can be defined as an ensemble of L x L Hermitian matrices. We point out that the eigenvalues of the matrix correspond in JT gravity to FZZT-type boundaries on which spacetimes can end. We then investigate an ensemble of matrices with 1<<N<<L eigenvalues held fixed. This corresponds to a version of JT gravity which includes N FZZT type boundaries in the path integral contour and which is found to emulate a discrete quantum chaotic system. In particular this version of JT gravity can capture the behavior of finite-volume holographic correlators at late times, including erratic oscillations.

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