Stability properties of Feynman's operational calculus for exponential functions of noncommuting operators

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Stability properties of Feynman's operational calculus are addressed in the setting of exponential functions of noncommuting operators. Applications of some of the stability results are presented. In particular, the time-dependent perturbation theory of nonrelativistic quantum mechanics is presented in the setting of the operational calculus and application of the stability results of this paper to the perturbation theory are discussed.

Original languageEnglish
Pages (from-to)265-292
Number of pages28
JournalActa Applicandae Mathematicae
Issue number3
Publication statusPublished - Dec 2002


All Science Journal Classification (ASJC) codes

  • Mathematics(all)
  • Applied Mathematics

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