Multipartite non-locality and entanglement signatures of a field-induced quantum phase transition

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• 作者：Josep Batle ; Majid Alkhambashi ; Ahmed Farouk…
• 关键词：Mesoscopic and Nanoscale Systems
• 刊名：The European Physical Journal B
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：90
• 期：2
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Condensed Matter Physics; Physics, general; Complex Systems; Fluid- and Aerodynamics; Solid State Physics;
• 出版者：Springer Berlin Heidelberg
• ISSN：1434-6036
• 卷排序：90

文摘

Quantum correlation measures are limited in practice to a few number of parties, since no general theory is still capable of reaching the thermodynamic limit. In the present work we study entanglement and non-locality for a cluster of spins belonging to a compound that displays a magnetocaloric effect. A quantum phase transition (QPT) is induced by an external magnetic field B, in such a way that the corresponding quantum fluctuations are reproduced at a much smaller scale than the experimental outcomes, and then described by means of the aforementioned quantum measures.