The Normal- and Antinormal-Ordered Decomposition Formulas of Multimode Exponential Operators
Song Tong-Qiang, Feng Jian, Gao Yun-Feng · Communications in Theoretical Physics · 2001
We obtain the normally ordered form of the general multimode exponential operator by means of parameter differentiation method and its antinormally ordered form by virtue of the technique of integration within an ordered product of operators. As an application, we obtain a new completeness relation in -mode Fock space.