Effective Theory of the Triton
Nuclear Theory
2009-10-31 v4
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.
Cite
@article{arxiv.nucl-th/9906032,
title = {Effective Theory of the Triton},
author = {P. F. Bedaque and H. -W. Hammer and U. van Kolck},
journal= {arXiv preprint arXiv:nucl-th/9906032},
year = {2009}
}
Comments
16 pages, Latex, 7 PS figures included with epsf.sty, discussion and references added, conclusions unchanged