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在双模空间,给出两种模式下厄密的cosine和sine算符.由于它们互相对易,就可构造出它们的共同本征态.讨论了这些相位算符和本征态矢的性质.研究了在P-B相位表示下这些算符的期望值The Hermitian cosine and sine operators for two particular models of two-mode space are obtained. As they commute, the common eigenstates are constructed. The properties of the operators and eigenvectors are discussed. The expectation values of these operators under the P-B phase representation are also studied.
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