Umbral methods and operator ordering

Details Umbral methods and operator ordering Umbral methods and operator ordering

2011-12-07

arxiv.org/abs/1112.1570v1

Physics

Mathematical Physics

10 pages, no figures

Scientific paper

By using methods of umbral nature, we discuss new rules concerning the
operator ordering. We apply the technique of formal power series to take
advantage from the wealth of properties of the exponential operators. The
usefulness of the obtained results in quantum field theory is discussed.

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