Abstract
We present here a derivation of Weinberg's formulas for the algebraic structure of current algebra and superconvergence sum rules in the case of massive pions, using the infinite-momentum method. We show that Weinberg's formulas are closely related to the fact that there is no part in some double commutation relations between axial charges , and the generators of inhomogeneous Lorentz transformations.
- Received 4 August 1969
DOI:https://doi.org/10.1103/PhysRev.188.2274
©1969 American Physical Society