Real-time gravitational replicas: Low dimensional examples
Abstract
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.
Keywords
Cite
@article{arxiv.2105.07002,
title = {Real-time gravitational replicas: Low dimensional examples},
author = {Sean Colin-Ellerin and Xi Dong and Donald Marolf and Mukund Rangamani and Zhencheng Wang},
journal= {arXiv preprint arXiv:2105.07002},
year = {2021}
}
Comments
53 pages, 11 figures. v2: clarifications for JT example, fixed typos