Holographic Entanglement Entropy in Janus deformed AdS$_3$ Geometries
Abstract
We investigate the time dependent entanglement entropy for boosted single intervals in interface conformal field theories (ICFTs) dual to Janus deformed AdS geometries. For a Janus deformed Poincar\'e AdS background, we obtain the entanglement entropy and a Janus induced correction using a replica technique for the equivalent dual field theory described on a conformally flat background on corresponding AdS slices on the asymptotic boundary. The holographic entanglement entropy is then computed through certain embedding relations for the bulk Janus deformed AdS geometry which exactly match with the field theory results. We further extend our analysis to investigate the entanglement entropy of corresponding intervals in ICFTs dual to bulk Janus deformed BTZ black hole and AdS black string geometries obtaining consistent results from both the field theoretic and bulk computations.
Cite
@article{arxiv.2512.06374,
title = {Holographic Entanglement Entropy in Janus deformed AdS$_3$ Geometries},
author = {Ankit Anand and Himanshu Chourasiya and Ankur Dey and Gautam Sengupta},
journal= {arXiv preprint arXiv:2512.06374},
year = {2025}
}
Comments
22 pages, 3 figures