Zander, ClaudiaPlastino, Angel Ricardo (Angelo)2010-07-262010-07-262009-08Zander, C, Plastino, A & Plastino, AR 2009, 'Quantum entanglement in a many-body system exhibiting multiple quantum phase transitions', Brazilian Journal of Physics, vol. 39, no. 2A, pp. 464-467. [http://www.sbfisica.org.br/bjp/]0103-9733http://hdl.handle.net/2263/14542We investigate the quantum entanglement-related features of the many-body model of Plastino and Moszkowski [N. Cimento 47 (1978) 470]. This is an exactly solvable N-body, SU2 two-level model exhibiting several quantum phase transitions. We show that these transitions happen to be also entanglement-transitions associated with different many-body Dicke states. The main properties of the model considered here make it particularly well suited to study, by recourse to exact analytical computations, some connections between quantum phase transitions and quantum entanglement-theory.enSociedade Brasileira de FisicaQuantum phase transitionsMany-body problemQuantum theoryPhase transformations (Statistical physics)Article