Time-like Entanglement Entropy: a top-down approach
Abstract
We investigate the concept of time-like entanglement entropy (tEE) within the framework of holography. We introduce a robust top-down prescription for computing tEE in higher-dimensional QFTs, both conformal and confining, eliminating the ambiguities typically associated with analytic continuation from Euclidean to Lorentzian signatures. We present accurate analytic approximations for tEE and time-like separations in slab geometries. We establish a clear stability criterion for bulk embeddings and demonstrate that tEE serves as a powerful tool for computing CFT central charges, extending and strengthening previous results. Finally, we apply our framework to holographic confining backgrounds, revealing distinctive behaviours like phase transitions.
Cite
@article{arxiv.2505.20388,
title = {Time-like Entanglement Entropy: a top-down approach},
author = {Carlos Nunez and Dibakar Roychowdhury},
journal= {arXiv preprint arXiv:2505.20388},
year = {2025}
}
Comments
9 pages, four figures. Journal version