A tripartite entanglement in de Sitter spacetime

We investigate the quantum correlation for tripartite entangled states in de Sitter space. First, we adopt the noisy quantum channel model. In this model, the expansion effect is represented by an operator sum representation with its corresponding Kraus operator. This map is shown to be trace-preser...

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Bibliographic Details
Published in:arXiv.org 2024-02
Main Authors: Bak, Sang-Eon, Alsing, Paul M, Miller, Warner A, Aslmarand, Shahabeddin M, Ahn, Doyeol
Format: Article
Language:English
Subjects:
Communication channels
Entanglement
Event horizon
Information retrieval
Spacetime
Universe
Online Access:Get full text
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Summary:We investigate the quantum correlation for tripartite entangled states in de Sitter space. First, we adopt the noisy quantum channel model. In this model, the expansion effect is represented by an operator sum representation with its corresponding Kraus operator. This map is shown to be trace-preserving and completely positive. Second, we analyze the quantum correlation by using the channel-state correspondence. For a large expansion rate, the tripartite mutual information has a large negative value, which corresponds to a small magnitude of bipartite mutual information. We relate this result with the challenge of recovering information from local measurements.
ISSN:2331-8422
DOI:10.48550/arxiv.1909.13454