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Type: Artigo de periódico
Title: Generalized purity and quantum phase transition for Bose-Einstein condensates in a symmetric double well
Author: Viscondi, TF
Furuya, K
de Oliveira, MC
Abstract: The generalized purity is employed for investigating the process of coherence loss and delocalization of the Q function in the Bloch sphere of a two-mode Bose-Einstein condensate in a symmetrical double well with cross collision. Quantum phase transition of the model is signaled by the generalized purity as a function of an appropriate parameter of the Hamiltonian and the number of particles (N). A power-law dependence of the critical parameter with N is derived.
Country: EUA
Editor: Amer Physical Soc
Citation: Physical Review A. Amer Physical Soc, v. 80, n. 1, 2009.
Rights: aberto
Identifier DOI: 10.1103/PhysRevA.80.013610
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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