Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/64886
Type: Artigo de periódico
Title: Entanglement, quantum phase transition and fixed-point bifurcation in the N-atom Jaynes-Cummings model with an additional symmetry breaking term
Author: Chagas, EA
Furuya, K
Abstract: In the present work we analyze the quantum phase transition (QPT) in the N-atom Jaynes-Cummings model (NJCM) with an additional symmetry breaking interaction term in the Hamiltonian. We show that depending on the type of symmetry breaking term added the transition order can change or not and also the fixed point associated to the classical analogue of the Hamiltonian can bifurcate or not. We present two examples of symmetry broken Hamiltonians and discuss based on them. the interconnection between the transition order, appearance of bifurcation and the behavior of the entanglement. (C) 2008 Elsevier B.V. All rights reserved.
Subject: quantum phase transition
bifurcation of fixed point
symmetry breaking
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/j.physleta.2008.06.080
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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