Eur. Phys. J. A (2003) 18: 301-304
https://doi.org/10.1140/epja/i2002-10221-7

The Bethe-Salpeter equation and the Low Energy Theorems for scattering

¹ School of Chemistry, Physics & Earth Sciences, Flinders University, GPO Box 2100, 5001, Adelaide, Australia
² TRIUMF, 4004 Wesbrook Mall, V6T 2A3, Vancouver, BC, Canada

^* e-mail: Iraj.Afnan@Flinders.edu.au

Abstract

The Bethe-Salpeter (BS) amplitude for scattering is evaluated at the off-mass-shell points corresponding to the Low Energy Theorems (LET) based on PCAC and current algebra. The results suggest a way of maintaining constructing between BS equation and LET.