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

Masaaki Nakamura, Kiyohide Nomura, Atsuhiro Kitazawa

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)3214-3217
Number of pages4
JournalPhysical Review Letters
Volume79
Issue number17
DOIs
Publication statusPublished - Jan 1 1997

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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