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2D dilaton gravity and the Weil-Petersson volumes with conical defects

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arxiv 2304.14948 v2 pith:62B7ELGT submitted 2023-04-28 hep-th math-phmath.MPmath.SG

classification hep-thmath-phmath.MPmath.SG
keywords dilatongravitydefectsvolumesweil-peterssonagreementanglesapproach
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We derive the Weil-Petersson measure on the moduli space of hyperbolic surfaces with defects of arbitrary opening angles and use this to compute its volume. We conjecture a matrix integral computing the corresponding volumes and confirm agreement in simple cases. We combine this mathematical result with the equivariant localization approach to Jackiw-Teitelboim gravity to justify a proposed exact solution of pure 2d dilaton gravity for a large class of dilaton potentials.

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  1. $x-y$ swap for $(2,2p+1)$ minimal string

    hep-th 2025-06 conditional novelty 6.0 of 10

    An x-y swapped spectral curve is conjectured to reproduce (2,2p+1) minimal string tachyon correlators without resonance transformations; verified at low genus, with a ground-ring extension that does not match HEM.

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