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Effective theory of the triton

✍ Scribed by P.F. Bedaque; H.-W. Hammer; U. van Kolck

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
146 KB
Volume
676
Category
Article
ISSN
0375-9474

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✦ Synopsis

We apply the effective field theory approach to the three-nucleon system. In particular, we consider S = 1/2 neutron-deuteron scattering and the triton. We show that in this channel a unique nonperturbative renormalization takes place which requires the introduction of a single three-body force at leading order. With one fitted parameter we find a good description of low-energy data. Invariance under the renormalization group explains some universal features of the three-nucleon system -such as the Thomas and Efimov effects and the Phillips line -and the origin of SU(4) symmetry in nuclei.

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