What type of study is this?

This is a Quantitative Study study.

September 27, 2025Open Access

Entanglement on a sphere

Key Points

The study reveals the structure of UV-divergent terms in entanglement behavior.
Significant findings include analytical exploration of IR terms from long-range correlations.
Numerical methods were employed to analyze the entanglement entropy of a massive scalar field.
Results indicate differences when comparing the Einstein universe with de Sitter and anti-de Sitter backgrounds.

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 de Sitter or an anti–de Sitter background.

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Cite This Study

Boutivas et al. (Thu,) studied this question.

synapsesocial.com/papers/68d7b3ddeebfec0fc52366c6 https://doi.org/https://doi.org/10.1103/8h9z-gmnm

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