Covariant perturbation expansion in chiral theories with pions and nucleons
نویسندگان
چکیده
منابع مشابه
Nucleons in Two-Flavor Partially-Quenched Chiral Perturbation Theory
Properties of the proton and the neutron are explored in partiallyquenched chiral perturbation theory with two non-degenerate light flavors. Masses, magnetic moments, matrix elements of isovector twist-2 operators and axial-vector currents are computed at the one-loop level in the chiral expansion.
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A chiral invariant effective Lagrangian may be used to calculate the three-body interactions among low-energy pions and nucleons in terms of known parameters. This method is illustrated by the calculation of the pion-nucleus scattering length. Research supported in part by the Robert A. Welch Foundation and NSF Grant PHY 9009850. Recent articles have described a systematic effective Lagrangian ...
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ژورنال
عنوان ژورنال: Annals of Physics
سال: 1976
ISSN: 0003-4916
DOI: 10.1016/0003-4916(76)90273-6