CFT derivation of entanglement phase transition in pseudo entropy
High Energy Physics - Theory
2026-03-13 v2
Abstract
In this paper, we discuss the entanglement phase transition of pseudo entropy in CFTs. We focus on the case where the in-state and the out-state are different boundary states related by boundary condition changing operators. We compute the pseudo entropy with BCFT methods and find a phase transition with respect to the conformal weight of the boundary condition changing operators. For holographic CFTs, we confirm that the CFT results match that evaluated in AdS.
Keywords
Cite
@article{arxiv.2602.22994,
title = {CFT derivation of entanglement phase transition in pseudo entropy},
author = {Hiroki Kanda and Tadashi Takayanagi and Zixia Wei},
journal= {arXiv preprint arXiv:2602.22994},
year = {2026}
}
Comments
14 pages + appendix, 6 figures