Landau Theory of the Finite Temperature Mott Transition
G. Kotliar, E. Lange, M. J. Rozenberg
Abstract
In the context of the dynamical mean-field theory of the Hubbard model, we identify microscopically an order parameter for the finite temperature Mott endpoint. We derive a Landau functional of the order parameter. We then use the order parameter theory to elucidate the singular behavior of various physical quantities which are experimentally accessible.
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