Nontrivial phase behaviour in the infinite-range quantum Mattis model

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

doi:10.1143/JPSJ.69.3200

Nontrivial phase behaviour in the infinite-range quantum Mattis model

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

情報学研究科・応用情報科学専攻

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
巻	69
号	10
DOI	https://doi.org/10.1143/JPSJ.69.3200
出版ステータス	Published - 2000 10

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJ.69.3200

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引用スタイル

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AU - Coolen, A. C.C.

AU - Van Der Sijs, A. J.

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KW - Randomness

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