Nontrivial Phase Behaviour in the Infinite-Range Quantum Mattis Model : General Physics
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概要
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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.
- 社団法人日本物理学会の論文
- 2000-10-15
著者
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NISHIMORI Hidetoshi
Department of Physics,Tokyo Institute of Technology
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Coolen A.c.c.
Department Of Mathematics King's College London
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Sollich P
King's Coll. London London Gbr
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SOLLICH P.
Department of Mathematics, King's College London
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SIJS A.J.van
Department of Physics, University of Oxford
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Sijs A.j.van
Department Of Physics University Of Oxford:(present)asm Litography
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Nishimori Hidetoshi
Department Of Physics Tokyo Institute Of Technology
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Nishimori Hidetoshi
Department Of Physics Facuilty Of Science Tokyo Institute Of Technology
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Sollich P.
Department of Mathematics, King's College London
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