論文

査読有り
2013年12月13日

Possibility of deconfined criticality in SU(N) Heisenberg models at small N

Physical Review B - Condensed Matter and Materials Physics
  • Kenji Harada
  • ,
  • Takafumi Suzuki
  • ,
  • Tsuyoshi Okubo
  • ,
  • Haruhiko Matsuo
  • ,
  • Jie Lou
  • ,
  • Hiroshi Watanabe
  • ,
  • Synge Todo
  • ,
  • Naoki Kawashima

88
22
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1103/PhysRevB.88.220408

To examine the validity of the scenario of the deconfined critical phenomena, we carry out a quantum Monte Carlo simulation for the SU(N) generalization of the Heisenberg model with four-body and six-body interactions. The quantum phase transition between the SU(N) Néel and valence-bond solid phases is characterized for N=2, 3, and 4 on the square and honeycomb lattices. While finite-size scaling analysis works well up to the maximum lattice size (L=256) and indicates the continuous nature of the phase transition, a clear systematic change towards the first-order transition is observed in the estimates of the critical exponent y≡1/ν as the system size increases. We also confirm the relevance of a squared valence-bond solid field Ψ2 for the SU(3) model. © 2013 American Physical Society.

リンク情報
DOI
https://doi.org/10.1103/PhysRevB.88.220408
ID情報
  • DOI : 10.1103/PhysRevB.88.220408
  • ISSN : 1098-0121
  • ISSN : 1550-235X
  • SCOPUS ID : 84890638666

エクスポート
BibTeX RIS