Removability of the Topological Term in the 2+1 Dimensional CP1 Model

  • The removability of the topological term in the 2+1 dimensional CP1 model is studied. Both the classical canonical transformation and quantum unitary transformation for the topological term are obtained. It is pointed out that, in order to give an answer to the question whether the topological term exists or not, one has to study not only the corresponding microscopic spin model but also the vacuum structure of the CP1 model.
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Gao Xiaochun and Xu Donghui. Removability of the Topological Term in the 2+1 Dimensional CP1 Model[J]. Chinese Physics C, 1995, 19(S3): 257-264.
Gao Xiaochun and Xu Donghui. Removability of the Topological Term in the 2+1 Dimensional CP1 Model[J]. Chinese Physics C, 1995, 19(S3): 257-264. shu
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Received: 1994-02-21
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    Supported by the National Natural Science Foundation of China and Zhejiang Provincial National Science Foundation of China.

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Removability of the Topological Term in the 2+1 Dimensional CP1 Model

  • Physics Department, Zhejiang University, Hangzhou, Zhejiang, China
Fund Project:  Supported by the National Natural Science Foundation of China and Zhejiang Provincial National Science Foundation of China.

Abstract: The removability of the topological term in the 2+1 dimensional CP1 model is studied. Both the classical canonical transformation and quantum unitary transformation for the topological term are obtained. It is pointed out that, in order to give an answer to the question whether the topological term exists or not, one has to study not only the corresponding microscopic spin model but also the vacuum structure of the CP1 model.

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