Superconductivity and the quantum hard-core dimer gas.
作者： Daniel S. Rokhsar , Steven A. Kivelson
DOI: 10.1103/PHYSREVLETT.61.2376
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摘要: On discute du systeme de liaisons valence resonnantes a courte distance realise par un gaz dimeres cœur dur quantique densite arbitraire sur reseau carre deux dimensions. Quand les couvrent completement le reseau, on pense qu'il y une transition premier ordre partir d'un cristal vers etat liquide isolant possedant des excitations basse energie, neutres et sans spin appelees «resonons». En dessous densites d'empilement compact, l'etat fondamental est superfluide. plus mode habituel en Goldstone, il limite zone
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