Entanglement on a Sphere
High Energy Physics - Theory
2025-07-03 v1 General Relativity and Quantum Cosmology
Quantum Physics
Abstract
We study the entanglement entropy of a massive scalar field in the background of the Einstein universe. We determine numerically the structure of the UV-divergent terms. We study analytically the IR term that originates in the long-range correlations arising from the field zero mode on the sphere. We compare with previous results for a scalar field in a dS or AdS background.
Cite
@article{arxiv.2507.01174,
title = {Entanglement on a Sphere},
author = {Konstantinos Boutivas and Dimitrios Katsinis and Georgios Pastras and Nikolaos Prountzos and Nikolaos Tetradis},
journal= {arXiv preprint arXiv:2507.01174},
year = {2025}
}
Comments
27 pages, 3 figures