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Nagy's perturbation of a non-selfadjoint operator and application to a Gribov operator in Bargmann space
  • Ines Feki,
  • Aref JERIBI,
  • Ridha Sfaxi
Ines Feki
University of Sfax
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Aref JERIBI
Universite de Sfax
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Ridha Sfaxi
University of Hafr-Al-Batin
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Abstract

The purpose of the present paper is to formulate some new supplements to perturbation theory of linear operators [15] by considering a non-analytic perturbation involving more than one perturbation parameter. An application to a Gribov operator in Bargmann space illustrates the mathematical problem involved in this paper.

Peer review status:UNDER REVIEW

03 Mar 2020Submitted to Mathematical Methods in the Applied Sciences
07 Mar 2020Assigned to Editor
07 Mar 2020Submission Checks Completed
22 Mar 2020Reviewer(s) Assigned