English

Time-like Entanglement Entropy: a top-down approach

High Energy Physics - Theory 2025-07-14 v2

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.

Keywords

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

R2 v1 2026-07-01T02:40:51.607Z