On Summing Soft Pions
- 15 December 1970
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 2 (12) , 3083-3085
- https://doi.org/10.1103/physrevd.2.3083
Abstract
A simple derivation of Weinberg's result on the chiral-symmetric coupling of soft pions to a high-energy process is presented. His formal for soft-virtual-pion corrections is shown to be not invariant under canonical transformation of the pion field. Thus this formula is model dependent and not a consequence of chiral symmetry.Keywords
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