Effective Field Theory for Few-Nucleon Systems

Details Effective Field Theory for Few-Nucleon Systems Effective Field Theory for Few-Nucleon Systems

2002-03-20

arxiv.org/abs/nucl-th/0203055v1

Ann.Rev.Nucl.Part.Sci. 52 (2002) 339-396

Physics

Nuclear Physics

Nuclear Theory

55 pages, 18 figures, to appear in Ann. Rev. Nucl. Part. Sci. 52 (2002)

Scientific paper

10.1146/annurev.nucl.52.050102.0

We review the effective field theories (EFTs) developed for few-nucleon systems. These EFTs are controlled expansions in momenta, where certain (leading-order) interactions are summed to all orders. At low energies, an EFT with only contact interactions allows a detailed analysis of renormalization in a non-perturbative context and uncovers novel asymptotic behavior. Manifestly model-independent calculations can be carried out to high orders, leading to high precision. At higher energies, an EFT that includes pion fields justifies and extends the traditional framework of phenomenological potentials. The correct treatment of QCD symmetries ensures a connection with lattice QCD. Several tests and prospects of these EFTs are discussed.

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