On the thermodynamic limit at a quantum critical point

Geyer H.B. ; Heiss W.D. ; Scholtz F.G. (2005)

Article

Open questions regarding the uniqueness and existence of the thermodynamic limit at a quantum critical point are discussed in the context of the Lipkin model, a popular model in many-body theory. This model illustrates a quantum phase transition, including spontaneous symmetry breaking. The thermodynamic limit seemingly yields different answers depending on the approach used. The discussion is based on recent developments, including a joint publication by the authors.

Please refer to this item in SUNScholar by using the following persistent URL: http://hdl.handle.net/10019.1/9657
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