Removability of the Topological Term in the O(3) Nonlinear σ-model

GAO Xiao-Chun; XU Jing-Bo; YAN Ji-Jin; LI Wen-Zhu

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2024年10月30日

Chinese Physics C> 1991, Vol. 15> Issue(7) : 591-597

Removability of the Topological Term in the O(3) Nonlinear σ-model

Department of Physics,Zhejiang University,Hangzhou 310027

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Abstract：
It is shown that the topological term in the O(3) nonlinear σ-model can be removed by a suitable canonical transformation in the classical theory of the model.In this paper,the quantum unitary transformation corresponding to the classical canonical transformation is found.The meaning of the unitary transformation and the removability of the topological term are then discussed.

References

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GAO Xiao-Chun, XU Jing-Bo, YAN Ji-Jin and LI Wen-Zhu. Removability of the Topological Term in the O(3) Nonlinear σ-model[J]. Chinese Physics C, 1991, 15(7): 591-597.

GAO Xiao-Chun, XU Jing-Bo, YAN Ji-Jin and LI Wen-Zhu. Removability of the Topological Term in the O(3) Nonlinear σ-model[J]. Chinese Physics C, 1991, 15(7): 591-597. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Removability of the Topological Term in the O(3) Nonlinear σ-model

Corresponding author: GAO Xiao-Chun,

Department of Physics,Zhejiang University,Hangzhou 310027

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1991-07-05

Abstract: It is shown that the topological term in the O(3) nonlinear σ-model can be removed by a suitable canonical transformation in the classical theory of the model.In this paper,the quantum unitary transformation corresponding to the classical canonical transformation is found.The meaning of the unitary transformation and the removability of the topological term are then discussed.