Reflection Positivity in Spin Space for the Heisenberg Model,the Kondo Hamiltonian and the Kondo Lattice

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概要

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• In this article we disctrss the reflection positivity in spin space for the Heisenberg naodel andthe Kondo Harniltonian. We show that the grotrnd state is uniqtre for J f 0 where J is thestrength of the exchange interaction in the Heisenberg model or the exchange covtpling betweenthe localized spins and conduction electrons in the Kondo n?odel. We introduce the Coulombinteraction U >0 between the conduction lectrons f'or the Kondo Hamiltonian to show theuniqueness of the ground state. We write the Hatniltonian in terms of fermions to express theexchange interactions and impose constraints. We euaaploy the Lagrange-rntzJtipJier method todeal with the constraints in this work.

• 社団法人日本物理学会の論文
• 1996-07-15

著者

• Yanagisawa Takashi

  Fundamental Physics Section Electrotechnical Laboratory

関連論文

• Order-Disorder Transition in the Two-Dimensional Antiferromagnet
• Diagonalization Study of the Two-Impurity Anderson Model
• Reflection Positivity in Spin Space for the Heisenberg Model,the Kondo Hamiltonian and the Kondo Lattice
• 1/N Expansion with the Hubbard Operators

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