A noisy quantum channel model for the cosmological horizon in de Sitter spacetime.
Year: 2019
Type: preprint
Abstract: Quantum correlation between two observers across the cosmological horizon and retrieval of the information behind the cosmological horizon are investigated in the frame of de Sitter spacetime. It is also shown that the effect of the Universe expansion can be described by a noisy quantum channel model having a complete positive map with an operator sum representation. This investigation shows that entanglement is degrading with increasing expansion rate of the Universe. We also show that there is a relation between bipartite mutual information and tripartite mutual information with respect to information theoretic context of the scrambling. This implies that there is a scrambling effect in the quantum task across the cosmological horizon in de Sitter spacetime similar to the case of black hole event horizon.
Source: arXiv (Cornell University)
Institution: University of Seoul
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2975712110