Some measures for fermionic entanglement in the cosmological de sitter spacetime

dc.contributor.author	Bhattacharya, S.
dc.contributor.author	Gaur, H.
dc.contributor.author	Joshi, J.
dc.date.accessioned	2021-06-12T09:24:56Z
dc.date.available	2021-06-12T09:24:56Z
dc.date.issued	2021-06-12
dc.identifier.uri	http://localhost:8080/xmlui/handle/123456789/1798
dc.description.abstract	We investigate two measures of quantum correlations and entanglement, namely the violation of the BellMermin-Klyshko (BMK) inequalities and the quantum discord, for Dirac fermions in the cosmological de Sitter background of dimension four. The BMK violation is focussed on the vacuum for two and four mode squeezed states and the maximum violation is demonstrated. For the quantum discord, we investigate a maximally entangled in-vacuum state. Qualitative similarities as well as differences of our results with that of different coordinatisations of de Sitter in the context of scalar and fermionic field theory is discussed.	en_US
dc.language.iso	en_US	en_US
dc.subject	de Sitter spacetime	en_US
dc.subject	fermions	en_US
dc.subject	BMK inequality	en_US
dc.title	Some measures for fermionic entanglement in the cosmological de sitter spacetime	en_US
dc.type	Article	en_US