Hubbard-Shastry lattice models
Citation:
Sergey Frolov and Eoin Quinn, Hubbard Shastry lattice models, Journal of Physics A, 45, 9, 2012, 095004-Download Item:
Abstract:
We consider two lattice models for strongly correlated electrons which are exactly solvable in one dimension. Along with the Hubbard model and the $\mathfrak {su}(2|2)$ spin chain, these are the only parity-invariant models that can be obtained from Shastry's R-matrix. One exhibits itinerant ferromagnetic behaviour, while for the other the electrons form bound pairs and at half-filling the model becomes insulating. We derive the thermodynamic Bethe ansatz equations for the models, analyse them at various limits, and in particular obtain zero temperature phase diagrams. Furthermore, we consider extensions of the models, which reduce to the Essler?Korepin?Schoutens model in certain limits.
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Grant Number
Science Foundation Ireland (SFI)
09/RFP/PHY2142
Author's Homepage:
http://people.tcd.ie/frolovsDescription:
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Author: FROLOV, SERGEY
Type of material:
Journal ArticleSeries/Report no:
Journal of Physics A45
9
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Full text availableKeywords:
lattice modelsDOI:
http://dx.doi.org/10.1088/1751-8113/45/9/095004Metadata
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