Combinatorial Approach to Boson Anti-Normal Ordering Problem
arXiv:1204.3652
Abstract
We address a systematic combinatorial approach to the anti-normal ordering problem. In this way, we use the Stirling numbers and their generating function, the so-called Bell polynomials, together with the operational methods to anti-normal the operator . In fact, we exploit the new theorem given by Shähandeh et al. in a special case of anti-normal ordering.