Locality and nonlocality of classical restrictions of quantum spin systems with applications to quantum large deviations and entanglement

0452216 - FZÚ 2016 RIV US eng J - Článek v odborném periodiku
De Roeck, W. - Maes, C. - Netočný, Karel - Schütz, M.
Locality and nonlocality of classical restrictions of quantum spin systems with applications to quantum large deviations and entanglement.
Journal of Mathematical Physics. Roč. 56, č. 2 (2015), "023301-1"-"023301-30". ISSN 0022-2488. E-ISSN 1089-7658
Institucionální podpora: RVO:68378271
Klíčová slova: quantum systems * quantum large deviations * entanglement * cluster expansions
Kód oboru RIV: BE - Teoretická fyzika
Impakt faktor: 1.234, rok: 2015

We study effective potentials for classical projections of spatially extended quantum systems. We provide sufficient conditions for their (quasi)locality and examples where it is broken. Relations to quantum large fluctuations and localizable entanglement are also discussed.
Trvalý link: http://hdl.handle.net/11104/0253251