Hidden Order and Dimerization Transition in S=2Chains
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概要
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We study grotrnd state properties of the S ::: 2 quantum antif'erromagnetic chain with a bondalternation H : I [1 f (5( -1)'1,5.7 = Sj?s by a Qtranttrm Monte Carlo calculation. We findthat the hidden Z7 x Z2 symmetry is broken for 0.3< IS< 0.5 while itis unbroken in theother regions. This confirms the successive ditnerization transitions first predicted by Aflleckand Haldane. Our result shows that these transitions can be understood in terms of the hiddenZ3 x Z2 symmetry breaking, as was discussed trsing the Valence-Bond-Solid states. Ftrrthermore,we find that the behavior of the generalized string correlation is qtralitatively very similar tothat in the Valence-Bond-Solid states, incltrding the location of zeroes as a function of the angleparameter.
- 社団法人日本物理学会の論文
- 1996-06-15
著者
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Oshikawa Masaki
Department Of Applied Physics Graduate School Of Engineering The University Of Tokyo
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Oshikawa Masaki
Department Of Physics And Astronomy University Of British Columbia:department Of Applied Physics Uni
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Yamanaka Masanori
Institute For Solid State Physics University Of Tokyo:department Of Applied Physics University Of To
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Miyashita Seiji
Department Of Earth And Space Science Osaka University
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Miyashita Seiji
Department Of Applied Physics University Of Tokyo
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Miyashita Seiji
Department Of Applied Physics Graduate School Of Engineering The University Of Tokyo
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