Finite-Energy Sum Rule and Current Algebra
Tohru Eguchi · Progress of Theoretical Physics · 1971
Rigorous treatment of the infinite momentum technique in current algebra is given by the use of the finite-energy sum rule method. As an application, a modified Adler-Weisberger relation which holds even in the case of Δσ=σπ-p(∞)-σπ+p(∞)≠0, is derived and is shown to be identical with the Weinberg-Tomozawa relations.