Continuous phase transition between Neel and valence bond solid phases on a spin ladder system
ORAL
Abstract
We investigate a quantum phase transition between a Neel phase and a valence bond solid (VBS) phase in the J-Q-like model in one spatial dimension.
We study a spin-1/2 two-leg XXZ ladder with a four-spin interaction with the use of the variational uniform matrix product state algorithm and an effective field theory.
We determine the phase diagram and present evidences that the Neel-VBS transition belongs to the Gaussian universality class.
We study a spin-1/2 two-leg XXZ ladder with a four-spin interaction with the use of the variational uniform matrix product state algorithm and an effective field theory.
We determine the phase diagram and present evidences that the Neel-VBS transition belongs to the Gaussian universality class.
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Presenters
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Takuhiro Ogino
Univ of Tokyo
Authors
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Takuhiro Ogino
Univ of Tokyo
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Ryui Kaneko
Kindai Univ.
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Satoshi Morita
Univ of Tokyo
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Shunsuke Furukawa
Keio Univ.
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Naoki Kawashima
Univ of Tokyo, Institute for Solid State Physics, University of Tokyo