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17 papers · 1 filter
The Goldberger -- Treiman Relation, and at
V. L. Eletsky, Ian I. Kogan
The Goldberger-Treiman relation is shown to persist in the chiral limit at finite temperatures to order . The dependence of turns out to be the same as for ,…
The structure of the invariant charge in massive theories with one coupling
Elisabeth Kraus
Invariance under finite renormalization group (RG) transformations is used to structure the invariant charge in models with one coupling in the 4 lowest orders of perturbation theo…
On the Foundations of Chiral Perturbation Theory
H. Leutwyler
The properties of the effective field theory relevant for the low energy structure generated by the Goldstone bosons of a spontaneously broken symmetry are reexamined. It is shown…
Nonrelativistic effective Lagrangians
H. Leutwyler
Chiral perturbation theory is extended to nonrelativistic systems with spontaneously broken symmetry. In the effective Lagrangian, order parameters associated with the generators o…
Threshold Pion Electroproduction in Chiral Perturbation Theory
V. Bernard, N. Kaiser, T. -S. H. Lee +1
Electroproduction of pions on the nucleon near the threshold is analyzed within the framework of baryon chiral perturbation theory. We give a thorough discussion of the low--energy…
Renormalization in Quantum Statistics of Systems with Spontaneous Symmetry Breaking
M. Chaichian, J. L. Lucio M., C. Montonen +2
Renormalization in quantum statistics in the presence of a charge associated to a spontaneously broken symmetry is discussed for the scalar field model. In contrast to the case of…