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arXiv · 2507.01174

Entanglement on a Sphere

Konstantinos Boutivas·Dimitrios Katsinis·Georgios Pastras·Nikolaos Prountzos·Nikolaos Tetradis
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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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Konstantinos Boutivas, Dimitrios Katsinis, Georgios Pastras, Nikolaos Prountzos, Nikolaos Tetradis. 2025-07-01. Entanglement on a Sphere. https://arxiv.org/abs/2507.01174

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