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Chiral symmetry and three-nucleon forces
- Source :
- Physical Review C. 59:53-58
- Publication Year :
- 1999
- Publisher :
- American Physical Society (APS), 1999.
-
Abstract
- After 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.<br />14 pages, latex, 2 postscript figs. -- submitted to Phys. Rev. C -- epsfig.sty required
Details
- ISSN :
- 1089490X and 05562813
- Volume :
- 59
- Database :
- OpenAIRE
- Journal :
- Physical Review C
- Accession number :
- edsair.doi.dedup.....aca047d8b260d4a141beb0a6ef6ba34d