info:eu-repo/semantics/article
Self-rotating wave approximation via symmetric ordering of ladder operators
Autor
HECTOR MANUEL MOYA CESSA
Institución
Resumen
We show how some Hamiltonians may be approximated using rotating wave
approximation methods. In order to achieve this we use the algebra of boson
ladder operators, and transformation formulas between normal and symmetric
ordering of the operators. The method presented is studied in two special cases;
the Morse and the Mathieu models. The connection with regular perturbation
theory is given and the validity of the approximation is discussed.