Phys. Rev. Lett. 21, 241–242 (1968)Chiral Symmetry and the Pion MassReceived 5 June 1968; published in the issue dated 22 July 1968 The realization of chiral SU(2) ⊗ SU(2) symmetry by nonlinear field transformations is considered from the standpoint of axiomatic field theory. We show that the communication relations of chiral symmetry are incompatible with the assumption that the pion has nonzero mass. © 1968 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.21.241
DOI:
10.1103/PhysRevLett.21.241
PACS:
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