Static Properties of the Transverse Ising Model with Substitutional Disorder

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概要

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• On the basis of the effective Hamiltonian method the static properties of the transverse Ising model with substitutional disorder have been investigated. By a perturbation expansion of the density matrix the self-consistent equation for the effective field is obtained in an analytical form. The transition temperature and the susceptibility etc. are derived from the partition function and numerically calculated. It is shown that for the diluted systems this approximation gives much lower transition temperatures and higher critical concentrations than the simple ones previously derived. In the two-component system with a strong transverse field a finite critical concentration is predicted in contrast to the previous studies. The application of this approximation to the "pseudo" one-dimensional systems having weak interchain correlations is also discussed.

• 社団法人日本物理学会の論文
• 1981-11-15

著者

• MORI Kazushige

  Department of Biological Science and Technology, Faculty of Engineering, University of Tokushima

• Mori Kazushige

  Department Of Physics School Of Science And Engineering Waseda University

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• Static Properties of the Transverse Ising Model with Substitutional Disorder

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