Spacetime anisotropy affects cosmological entanglement

Autor: Roberto Pierini, Shahpoor Moradi, Stefano Mancini
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Nuclear Physics B, Vol 924, Iss C, Pp 684-698 (2017)
Druh dokumentu: article
ISSN: 0550-3213
1873-1562
39522253
DOI: 10.1016/j.nuclphysb.2017.09.025
Popis: Most existing cosmological entanglement studies are focused on the isotropic Robertson–Walker (RW) spacetime. Here we go beyond this limitation and study the influence of anisotropy on entanglement generated by dynamical spacetime. Since the isotropic spacetime is viewed as a background medium and the anisotropy is incorporated as perturbation, we decompose entanglement entropy into isotropic and anisotropic contributions. The latter is shown to be non-negligible by analyzing two cosmological models with weak and conformal coupling. We also show the possibility of using entanglement to infer about universe features.
Databáze: Directory of Open Access Journals
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