Are Pions Perturbative in Effective Field Theory?

Details Are Pions Perturbative in Effective Field Theory? Are Pions Perturbative in Effective Field Theory?

1998-06-10

arxiv.org/abs/nucl-th/9806028v2

Physics

Nuclear Physics

Nuclear Theory

10 pages, 4 figures. More details included, different arguments given

Scientific paper

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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