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Article
Chiral Lagrangians and pion-field redefinition
An explicit solution of the differential equation for Weinberg’s class of chiral Lagrangians, with arbitraryf(π 2), is given here. On the contrary, for any given symmetry-breaking term the explicit solution of th...
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Article
Nakanishi representation and unitarity condition
The explicit forms of the kernels appearing in the elastic unitarity condition are derived for the Nakanishi representation of scattering amplitude.