Exponential Perturbative Expansions and Coordinate Transformations

We propose a unified approach for different exponential perturbation techniques used in the treatment of time-dependent quantum mechanical problems, namely the Magnus expansion, the Floquet–Magnus expansion for periodic systems, the quantum averaging technique, and the Lie–Deprit perturbative algori...

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Bibliographic Details
Main Authors: Ana Arnal, Fernando Casas, Cristina Chiralt
Format: Article
Language:English
Published: MDPI AG 2020-08-01
Series:Mathematical and Computational Applications
Subjects:
Online Access:https://www.mdpi.com/2297-8747/25/3/50