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Open Quantum Systems Decoherence
Entanglement Theory Quantum Correlations
Entanglement Entropy as a Probe Beyond the Horizon
arXiv
Authors: Konstantinos Boutivas, Dimitrios Katsinis, Georgios Pastras, Nikolaos Tetradis
Year
2024
Paper ID
65551
Status
Preprint
Abstract Read
~2 min
Abstract Words
83
Citations
N/A
Abstract
The entanglement entropy of a free field in de Sitter space is enhanced by the squeezing of its modes. We show analytically that the expansion induces a term in the entanglement entropy that depends logarithmically on the size of the overall system, which may extend beyond the horizon. In cosmology the size of the system can be identified with the size of a spatially finite universe, or with the wavelength of the first mode that exited the horizon in the beginning of inflation.
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- This paper contributes to the Entanglement Theory & Quantum Correlations research area in the Quantum Articles archive.
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- The entanglement entropy of a free field in de Sitter space is enhanced by the squeezing of its modes.
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