Real-time gravitational replicas: low dimensional examples
May 14, 2021
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Abstract: (Springer)
We continue the study of real-time replica wormholes initiated in [1]. 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 Rényi 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.Note:
- 53 pages, 11 figures. v2: clarifications for JT example, fixed typos
- AdS-CFT Correspondence
- Gauge-gravity correspondence
- gravitation: path integral
- gravitation: duality
- dimension: 2
- field theory: conformal
- entropy
- wormhole
- variational
- holography
References(47)
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