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- W4322717907 abstract "We study the momentum-space entanglement between the sub- and super-Hubble modes of a spectator scalar field, with a cubic $lambda phi^3$ interaction, in de Sitter space. Momentum-space entanglement has some universal properties for any interacting quantum field theory, and we examine them for this specific curved background using the Hubble scale as a natural delimiter to define UV/IR separation. We show that there are several new subtleties when generalising flat space results due to having a time-dependent interaction term and a non-trivial vacuum state. Our main finding is that the momentum-space entanglement entropy in de Sitter space grows very rapidly, supporting previous similar results for cosmological perturbations [1], which leads to interesting new questions." @default.
- W4322717907 created "2023-03-03" @default.
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- W4322717907 date "2023-02-27" @default.
- W4322717907 modified "2023-09-26" @default.
- W4322717907 title "Momentum-space entanglement entropy in de Sitter" @default.
- W4322717907 doi "https://doi.org/10.48550/arxiv.2302.13894" @default.
- W4322717907 hasPublicationYear "2023" @default.
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