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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/7769
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dc.contributor.authorSurya, Sumati-
dc.contributor.authorX, Nomaan-
dc.contributor.authorYazdi K, Yasaman-
dc.date.accessioned2021-05-15T12:58:50Z-
dc.date.available2021-05-15T12:58:50Z-
dc.date.issued2021-06-
dc.identifier.citationClassical and Quantum Gravity, 2021, Vol. 38, p115001en_US
dc.identifier.issn0264-9381-
dc.identifier.issn1361-6382 (Online)-
dc.identifier.urihttp://hdl.handle.net/2289/7769-
dc.descriptionRestricted Access. An open-access version is available at arXiv.org (one of the alternative locations)en_US
dc.description.abstractde Sitter (dS) cosmological horizons are known to exhibit thermodynamic properties similar to black hole horizons. In this work we study causal set dS horizons, using Sorkin's spacetime entanglement entropy (SSEE) formula, for a conformally coupled quantum scalar field. We calculate the causal set SSEE for the Rindler-like wedge of a symmetric slab of dS spacetime in d = 2, 4 spacetime dimensions using the Sorkin–Johnston vacuum state. We find that the SSEE obeys an area law when the spectrum of the Pauli–Jordan operator is appropriately truncated in both the dS slab as well as its restriction to the Rindler-like wedge. Without this truncation, the SSEE satisfies a volume law. This is in agreement with Sorkin and Yazdi's calculations for the causal set SSEE for nested causal diamonds in ${\mathbb{M}}^{2}$, where they showed that an area law is obtained only after truncating the Pauli–Jordan spectrum. In this work we explore different truncation schemes with the criterion that the SSEE so obtained obeys an area lawen_US
dc.language.isoenen_US
dc.publisherIOP Publishingen_US
dc.relation.urihttps://arxiv.org/abs/2008.07697en_US
dc.relation.urihttps://doi.org/10.1088/1361-6382/abf279en_US
dc.relation.urihttps://ui.adsabs.harvard.edu/abs/2020arXiv200807697S/abstracten_US
dc.rights2021, IOP Publishingen_US
dc.subjectcausal setsen_US
dc.subjectentanglement entropyen_US
dc.subjectde Sitter spacetimeen_US
dc.subjectSJ vacuumen_US
dc.subjectdiscrete spacetimeen_US
dc.subjectarea lawen_US
dc.subjectblack hole entropyen_US
dc.titleEntanglement entropy of causal set de Sitter horizonsen_US
dc.typeArticleen_US
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