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Real-time gravitational replicas: Low dimensional examples

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arxiv 2105.07002 v2 pith:SEOP4HFY submitted 2021-05-14 hep-th gr-qc

Real-time gravitational replicas: Low dimensional examples

Sean Colin-Ellerin , Xi Dong , Donald Marolf , Mukund Rangamani , Zhencheng Wang This is my paper
classification hep-th gr-qc
keywords gravitationalreal-timecomputationdynamicsexamplesintegralpathamenable
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We continue the study of real-time replica wormholes initiated in arXiv:2012.00828. Previously, we had discussed the general principles and had outlined a variational principle for obtaining stationary points of the real-time gravitational path integral. In the current work we present several explicit examples in low-dimensional gravitational theories where the dynamics is amenable to analytic computation. We demonstrate the computation of R\'enyi entropies in the cases of JT gravity and for holographic two-dimensional CFTs (using the dual gravitational dynamics). In particular, we explain how to obtain the large central charge result for subregions comprising of disjoint intervals directly from the real-time path integral.

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Cited by 3 Pith papers

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