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1975•Progress of Theoretical PhysicsOpen access

The Antiferromagnetic Ground State of a Half-Filled Hubbard Model

Katsunori Kubo, M. Uchinami

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Abstract

The effect of electron correlations on the antiferromagnetic ground state of a half-filled Hubbard model is examined by means of two approximate ways; Gutzwiller's variational method and the perturbational method. Both results by the two ways indicate that the antiferromagnetism is not destroyed by correlation effect in the limit of weak interaction.

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The effect of electron correlations on the antiferromagnetic ground state of a half-filled Hubbard model is examined by means of two approximate ways; Gutzwiller's variational method and the perturbational method. Both results by the two ways indicate that the antiferromagnetism is not destroyed by correlation effect in the limit of weak interaction.

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Available abstract

The effect of electron correlations on the antiferromagnetic ground state of a half-filled Hubbard model is examined by means of two approximate ways; Gutzwiller's variational method and the perturbational method. Both results by the two ways indicate that the antiferromagnetism is not destroyed by correlation effect in the limit of weak interaction.

Key concepts: Antiferromagnetism, Physics, Hubbard model, Ground state, Condensed matter physics, Limit (mathematics), Electronic correlation, Electron

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