Entanglement on a Sphere

• URL: http://arxiv.org/abs/2507.01174v1
• Date: Tue, 01 Jul 2025 20:23:53 GMT
• Title: Entanglement on a Sphere
• Authors: Konstantinos Boutivas, Dimitrios Katsinis, Georgios Pastras, Nikolaos Prountzos, Nikolaos Tetradis,
• Abstract summary: We study the entanglement entropy of a massive scalar field in the background of the Einstein universe.<n>We analytically the IR term that originates in the long-range correlations arising from the field zero mode on the sphere.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• 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.

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