Effective Theory of the Triton

Abstract

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.

16 pages, Latex, 7 PS figures included with epsf.sty, discussion and references added, conclusions unchanged

References in corpus (4)

• Nucleon-Nucleon Effective Field Theory Without Pions
• Effective Field Theory of Nuclear Forces
• Wigner symmetry in the limit of large scattering lengths
• NNLO Calculation of Two-Nucleon Scattering in EFT for a Two Yukawa Toy Model

Cited by in corpus (208)

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