Nontrivial phase behaviour in the infinite-range quantum Mattis model

P. Sollich, Hidetoshi Nishimori, A. C.C. Coolen, A. J. Van Der Sijs

研究成果: Article査読

4 被引用数 (Scopus)

抄録

We have solved the quantum version of the Mattis model with infinite-range interactions. A variational approach gives the exact solution for the infinite-range system, in spite of the non-commutative nature of the quantum spin components; this implies that quantum effects are not predominant in determining the macroscopic properties of the system. Nevertheless, the model has a surprisingly rich phase behaviour, exhibiting phase diagrams with tricritical, three-phase and critical end points.

本文言語English
ページ(範囲)3200-3213
ページ数14
ジャーナルjournal of the physical society of japan
69
10
DOI
出版ステータスPublished - 2000 10

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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