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The Thermodynamical Limit of the Lipkin-Meshkov-Glick Model

P. Ribeiro·J. Vidal·R. Mosseri
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Abstract

A method based on the analyzis 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 only distinguishes between two phases.

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P. Ribeiro, J. Vidal, R. Mosseri. 2007-09-03. The Thermodynamical Limit of the Lipkin-Meshkov-Glick Model. https://doi.org/10.1103/physrevlett.99.050402

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