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29 March 2024
 
  » arxiv » nucl-th/9809065

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Chiral Symmetry and Three-Nucleon Forces
J.L. Friar ; D. Hüber ; U. van Kolck ;
Date 22 Sep 1998
Journal Phys.Rev. C59 (1999) 53-58
Subject nucl-th
AbstractAfter a brief review of the role three-nucleon forces play in the few-nucleon systems, the chiral-perturbation-theory approach to these forces is discussed. Construction of the (nominal) leading- and subleading-order Born terms and pion-rescattering graphs contributing to two-pion-exchange three-nucleon forces is reviewed, and comparisons are made of the types of such forces that are used today. It is demonstrated that the short-range $c$-term of the Tucson-Melbourne force is unnatural in terms of power counting and should be dropped. The class of two-pion-exchange three-nucleon forces then becomes rather uniform.
Source arXiv, nucl-th/9809065
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