Nonperturbative evaluation of the few-body states for scalar χ2φ interaction

Published: 15-04-2001| Version 1 | DOI: 10.17632/7m22j5x4n2.1
Çetin Şavklı


Abstract A knowledge of nonpertubative propagators is often needed when the standard perturbative methods are not applicable. An example of this is the bound state problem in field theory. While a nonperturbative result is valuable by itself, it is also an important guide for those who work on developing phenomenological models for the nonperturbative problem. The Feynman–Schwinger representation approach provides a convenient framework for calculating nonperturbative propagators. In this paper we pro... Title of program: phi3 Catalogue Id: ADNO_v1_0 Nature of problem The program provided here evaluates the mass and distribution probabilities of the fully interacting n-body propagator (n<=3) for scalar chi-square phi interaction in 3+1 dimensions. The evaluation takes into account all self energy, vertex dressing, and exchange interaction contributions except those involving matter loops (the quenched approximation). Versions of this program held in the CPC repository in Mendeley Data ADNO_v1_0; phi3; 10.1016/S0010-4655(00)00240-X This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)