2012/04/16 by M. R. Bazrafkan, Bazrafkan, M. R., F. Shähandeh +3
Mathematics · Physics and Astronomy · #FOS: Physical sciences #Mathematical Physics (math-ph) #math-ph #math.MP
paper · pdf · doi:10.48550/arxiv.1204.3652
arxiv created 2012/04/16 · arxiv updated 2012/04/18
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 e^λa^†a. In fact, we exploit the new theorem given by Shähandeh et al. in a special case of anti-normal ordering.