Covariant holographic reflected entropy in $AdS_3/CFT_2$

TL;DR

This paper proposes a covariant holographic reflected entropy in AdS/CFT, computes it explicitly for time-dependent states in AdS3/CFT2, and confirms its consistency with bulk extremal entanglement wedge cross sections.

Contribution

It introduces a covariant holographic reflected entropy proposal and verifies it through explicit calculations in AdS3/CFT2 with rotating BTZ black holes.

Findings

Reflected entropy matches extremal entanglement wedge cross section results.

Validates the covariant proposal for non-static AdS geometries.

Supports extension to higher-dimensional AdS/CFT scenarios.

Abstract

We substantiate a covariant proposal for the holographic reflected entropy in $CFT$s dual to non-static $AdS$ geometries from the bulk extremal entanglement wedge cross section in the literature with explicit computations in the $AdS_3/CFT_2$ scenario. In this context we obtain the reflected entropy for zero and finite temperature time dependent bipartite mixed states in $CFT_{1+1}$s with a conserved charge dual to bulk rotating extremal and non-extremal BTZ black holes through a replica technique. Our results match exactly with the corresponding extremal entanglement wedge cross section for these bulk geometries in the literature. This constitutes a significant consistency check for the proposal and its possible extension to the corresponding higher dimensional $AdS/CFT$ scenario.