S M M Evans
Abstract
In this paper we calculate the regions of stability of the ferromagnetic and antiferromagnetic phases in the Hubbard model using the Kotliar-Ruckenstein slave-boson mean-field theory. The results for strong ferromagnetism in a 2 d square lattice are seen to be in reasonable agreement with exact results.
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In this paper we calculate the regions of stability of the ferromagnetic and antiferromagnetic phases in the Hubbard model using the Kotliar-Ruckenstein slave-boson mean-field theory. The results for strong ferromagnetism in a 2 d square lattice are seen to be in reasonable agreement with exact results.
Key concepts: Hubbard model, Slave boson, Square lattice, Antiferromagnetism, Ferromagnetism, Condensed matter physics, Phase diagram, Physics