Renormalization group analysis of the spin-gap phase in the one-dimensional t-J model

Masaaki Nakamura, Kiyohide Nomura, Atsuhiro Kitazawa

研究成果: ジャーナルへの寄稿学術誌査読

47 被引用数 (Scopus)

抄録

We study the spin-gap phase in the one-dimensional t-J model, assuming that it is caused by the backward scattering process. Based on the renormalization group analysis and symmetry, we can determine the transition point between the Tomonaga-Luttinger liquid and the spin-gap phases, by the level crossing of the singlet and the triplet excitations. In contrast to the previous works, the obtained spin-gap region is unexpectedly large. We also determine that the universality class of the transition belongs to the k = 1 SU(2) Wess-Zumino-Witten model.

本文言語英語
ページ(範囲)3214-3217
ページ数4
ジャーナルPhysical review letters
79
17
DOI
出版ステータス出版済み - 1997

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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