Are Pions Perturbative in Effective Field Theory?
classification
⚛️ nucl-th
hep-ph
keywords
pionseffectivefieldtheorybelowenergiesexplicitlyexternal
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It is shown that pions can be included perturbatively into effective field theory only for the external momenta, well below the pion mass. But for such low energies it is not necessary to include pions explicitly.
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