Removability of the Topological Term in the 2+1 Dimensional CP<sup>1</sup> Model

Gao Xiaochun; Xu Donghui

Chinese Physics C> 1995, Vol. 19> Issue(S3) : 257-264

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

Gao Xiaochun ,
Xu Donghui

Physics Department, Zhejiang University, Hangzhou, Zhejiang, China

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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.
- CP¹ model ,
- topological term ,
- removability

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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

Gao Xiaochun
Xu Donghui

Physics Department, Zhejiang University, Hangzhou, Zhejiang, China

Received Date: 1994-02-21

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.