R emovability of the Topological Term in the 2+1 Dimensional CP1 Model

  • The removability of the topological term in 2+1 Dimensional CP1 model is studied. Both the classical canonical transformation and quantum unitary transformation for the removal of the topological term are obtained. It is pointed out that,in order to give an answer to the question of 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. R emovability of the Topological Term in the 2+1 Dimensional CP1 Model[J]. Chinese Physics C, 1995, 19(5): 413-419.
Gao Xiaochun and Xu Donghui. R emovability of the Topological Term in the 2+1 Dimensional CP1 Model[J]. Chinese Physics C, 1995, 19(5): 413-419. shu
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Received: 1900-01-01
Revised: 1900-01-01
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R emovability of the Topological Term in the 2+1 Dimensional CP1 Model

    Corresponding author: Gao Xiaochun,
  • Physics Department, Zhejiang University, Hangzhou 310027

Abstract: The removability of the topological term in 2+1 Dimensional CP1 model is studied. Both the classical canonical transformation and quantum unitary transformation for the removal of the topological term are obtained. It is pointed out that,in order to give an answer to the question of 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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