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|Title:||Quantum Monte Carlo simulation of S=1/2 Heisenberg model with four spin interaction|
|Author's alias:||原田, 健自|
|Journal title:||Journal of Physics: Conference Series|
|Abstract:||The spin S = 1/2 Heisenberg model with four-spin interaction on the square lattice is studied by using quantum Monte Carlo method. When the four-spin interaction is dominant, the system has a VBS ground state. In this case, we find a finite-temperature second-order phase transition to the VBS state. The universality class of the transition is investigated. We estimate the critical exponents ν and η from the finite size scaling analysis and find ν = 0.68(1) and η = 0.55(2).|
|Description:||25th International Conference on Low Temperature Physics (LT25)|
|Rights:||© 2009 IOP Publishing Ltd.|
Published under licence in 'Journal of Physics: Conference Series' by IOP Publishing Ltd. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, M Tsukamoto, K Harada, N Kawashima. Quantum Monte Carlo simulation of S=1/2 Heisenberg model with four spin interaction. Journal of Physics: Conference Series, Volume 150, Part 4, 042218 (2009). doi: 10.1088/1742-6596/150/4/042218.
|Appears in Collections:||Journal Articles|
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