Star product and ordered moments of photon creation and annihilation operators
Quantum Physics
2012-01-05 v3 Mathematical Physics
math.MP
Abstract
We develop a star-product scheme of symbols defined by the normally ordered powers of the creation and annihilation photon operators, (a\dag)^m a^n. 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.
Keywords
Cite
@article{arxiv.1108.2244,
title = {Star product and ordered moments of photon creation and annihilation operators},
author = {S. N. Filippov and V. I. Man'ko},
journal= {arXiv preprint arXiv:1108.2244},
year = {2012}
}
Comments
14 pages, 4 figures, some misprints are corrected, to appear in J. Phys. A