SciELO - Scientific Electronic Library Online

vol.39 número2ANonextensive relativistic nuclear and subnuclear equation of stateq-distributions in complex systems: a brief review índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados



Links relacionados


Brazilian Journal of Physics

versão On-line ISSN 1678-4448


ZANDER, C.; PLASTINO, A.  e  PLASTINO, A. R.. Quantum entanglement in a many-body system exhibiting multiple quantum phase transitions. Braz. J. Phys. [online]. 2009, vol.39, n.2a, pp. 464-467. ISSN 1678-4448.

We 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.

Palavras-chave : Quantum phase transitions; Many body systems.

        · texto em Inglês     · Inglês (pdf) Inglês (epdf)