Power Counting and the Renormalization Group for an Effective Description of NN Scattering

Details Power Counting and the Renormalization Group for an Effective Description of NN Scattering Power Counting and the Renormalization Group for an Effective Description of NN Scattering

1998-04-23

arxiv.org/abs/nucl-th/9804061v1

Physics

Nuclear Physics

Nuclear Theory

18 pages, 3 figures; contribution to the Caltech/INT Workshop, "Nuclear Physics with Effective Field Theories"

Scientific paper

I outline the power counting scheme recently introduced by M. Savage, M. Wise and myself for the effective field theory treatment of nucleon-nucleon scattering. It is particularly useful for describing systems with a large scattering length, and differs from Weinberg's power counting. A renormalization group analysis plays a big role in determining the order of a given operator. Pions are ignored in this discussion; how to incorporate them is discussed in M. Savage's talk, nucl-th/9804034.

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