Large-charge R\'enyi entropy
High Energy Physics - Theory
2025-10-08 v2 Strongly Correlated Electrons
Quantum Physics
Abstract
The charged (symmetry-resolved) vacuum R\'enyi entanglement entropy on a disk is computed in the limit of large U(1) global charge for any R\'enyi index. We show that it behaves universally for a broad class of conformal field theories including the O(2) Wilson-Fisher fixed-point, by using the effective field theory at large global charge. The result establishes one of the first concrete computations of entanglement quantities in strongly-coupled field theories.
Keywords
Cite
@article{arxiv.2506.10072,
title = {Large-charge R\'enyi entropy},
author = {Masataka Watanabe},
journal= {arXiv preprint arXiv:2506.10072},
year = {2025}
}