P. Ribeiro, J. Vidal, R. Mosseri
Published 2007-03-19, updated 2007-09-03Version 2
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.
Comments: 4 pages, 3 figures, published version
Journal: Phys.Rev.Lett.99:050402,2007
Exact spectrum of the Lipkin-Meshkov-Glick model in the thermodynamic limit and finite-size corrections
Thermodynamical limit in non-extensive and Renyi statistics
Universality of the negativity in the Lipkin-Meshkov-Glick model
