Entanglement entropy between tangent balls in CFT$_D$
High Energy Physics - Theory
2025-12-09 v2
Abstract
We apply the universal method developed in \cite{Jiang:2025jnk} to compute the entanglement entropy between two tangent balls in CFT. When taking the radius of one ball to infinity, it gives the entanglement entropy between a ball and its tangent half plane. In two-dimensional case, this configuration is equivalent to the entanglement in boundary conformal field theory (BCFT) between the negative half-axis and an interval ending on the boundary.
Cite
@article{arxiv.2510.01655,
title = {Entanglement entropy between tangent balls in CFT$_D$},
author = {Jiankun Li and Li Song},
journal= {arXiv preprint arXiv:2510.01655},
year = {2025}
}