Entanglement on a sphere
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.
Authors
- N. Tetradis (ORCID: https://orcid.org/0009-0003-7868-3235)
- Georgios Pastras (ORCID: https://orcid.org/0000-0001-7652-8504)
- Konstantinos Boutivas
- Nikolaos Prountzos
- Dimitrios Katsinis (ORCID: https://orcid.org/0000-0001-5607-9625)
Institutions
- National and Kapodistrian University of Athens (GR)
Publication Details
- Journal
- Physical review. D/Physical review. D.
- Published
- 2025-09-25
- DOI
- https://doi.org/10.1103/8h9z-gmnm
- Primary Topic
- Black Holes and Theoretical Physics
- Type
- article
- Field-Weighted Citation Impact
- 0.00