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Thermodynamical Limit of the Lipkin-Meshkov-Glick Model

Journal Article · · Physical Review Letters
; ;  [1]
  1. Laboratoire de Physique Theorique de la Matiere Condensee, CNRS UMR 7600, Universite Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05 (France)
A method based on the analysis of the Majorana polynomial roots is introduced to compute the spectrum of the Lipkin-Meshkov-Glick model in the thermodynamical limit. A rich structure made of four qualitatively different regions is revealed in the parameter space, whereas the ground state study distinguishes between only two phases.
OSTI ID:
20957911
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 5 Vol. 99; ISSN 0031-9007; ISSN PRLTAO
Country of Publication:
United States
Language:
English

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