Star product and ordered moments of photon creation and annihilation operators
Abstract
We develop a star-product scheme of symbols defined by the normally ordered powers of the creation and annihilation photon operators, (a)m an. The corresponding phase space is a two-dimensional lattice with nodes (m,n) given by pairs of nonnegative integers. The star-product kernel of symbols on the lattice and intertwining kernels to other schemes are found in explicit form. Analysis of peculiar properties of the star-product kernel results in new sum relations for factorials. Advantages of the developed star-product scheme for describing dynamics of quantum systems are discussed and time evolution equations in terms of the ordered moments are derived.
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