Recursive algorithm for arrays of generalized Bessel functions: Numerical access to Dirac-Volkov solutions

Erik Lötstedt, U. Jentschura

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

In the relativistic and the nonrelativistic theoretical treatment of moderate and high-power laser-matter interaction, the generalized Bessel function occurs naturally when a Schrödinger-Volkov and Dirac-Volkov solution is expanded into plane waves. For the evaluation of cross sections of quantum electrodynamic processes in a linearly polarized laser field, it is often necessary to evaluate large arrays of generalized Bessel functions, of arbitrary index but with fixed arguments. We show that the generalized Bessel function can be evaluated, in a numerically stable way, by utilizing a recurrence relation and a normalization condition only, without having to compute any initial value. We demonstrate the utility of the method by illustrating the quantum-classical correspondence of the Dirac-Volkov solutions via numerical calculations.

Original languageEnglish
Article number026707
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume79
Issue number2
DOIs
Publication statusPublished - Feb 2 2009

Fingerprint

Bessel functions
Recursive Algorithm
Bessel Functions
Generalized Functions
Paul Adrien Maurice Dirac
Normalisation condition
High Power Laser
Electrodynamics
quantum electrodynamics
Recurrence relation
Plane Wave
Numerical Calculation
high power lasers
plane waves
Cross section
Correspondence
Linearly
Laser
Necessary
evaluation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Statistical and Nonlinear Physics
  • Statistics and Probability

Cite this

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