Eur. Phys. J. B (2017) 90: 31
https://doi.org/10.1140/epjb/e2017-70615-9

Regular Article

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

¹ Departament de Física, Universitat de les Illes Balears, 07122 Palma de Mallorca, Balearic Islands, Spain
² Information Technology Department, Al-Zahra College for Women, P.O.Box 3365 Muscat, Oman
³ Department of Physics, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
⁴ Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran

^a e-mail: jbv276@uib.es

Received: 17 October 2016
Received in final form: 2 December 2016
Published online: 13 February 2017

Abstract

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.