Singh, V. (1959) On the interaction Hamiltonian of symmetric pseudoscalar meson theory Il Nuovo Cimento (1955-1965), 11 (6). pp. 800-804.
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Official URL: http://www.springerlink.com/content/9q7k5708q45326...
Related URL: http://dx.doi.org/10.1007/BF02732545
The equivalence of the pseudoscalar and pseudovector couplings of pseudoscalar pions to nucleons has been investigated here in a straightforward manner without making any use of a canonical transformation as has been done previously (1). PS-coupling is shown to be equivalent, as far as theS-matrix is concerned, to the usualp-wave ands-wave terms along with some non-local terms whose interpretation is not yet clear.
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