Nonperturbative method of calculation of functional integrals

A method is proposed to calculate functional integrals beyond the scope of perturbation theory. The method uses only the Gauss quadratures and only the diagrams of the standard perturbation theory. By using the anharmonic oscillator as an example the method is demonstrated to be very effective.

Saved in:
Bibliographic Details
Published in:Physics letters. A 1991-07, Vol.157 (4), p.261-264
Main Authors: Sissakian, A.N., Solovtsov, I.L.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Geometry
Mathematics
Sciences and techniques of general use
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A method is proposed to calculate functional integrals beyond the scope of perturbation theory. The method uses only the Gauss quadratures and only the diagrams of the standard perturbation theory. By using the anharmonic oscillator as an example the method is demonstrated to be very effective.
ISSN:0375-9601
1873-2429
DOI:10.1016/0375-9601(91)90063-E