Eur. Phys. J. A (2004) 19: 159-164
https://doi.org/10.1140/epjad/s2004-03-026-8

Cold and hot nuclear matter

Few-nuclon physics based on chiral dynamics

¹ Ruhr-Universität Bochum, Institut für Theoretische Physik II, D-44870 Bochum, Germany
² Dpt. of Physics, Faculty of Engineering, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
³ Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik (Theorie), Nußallee 14-16, D-53115 Bonn
⁴ Department of Physics, University of Arizona, Tucson, Arizona 85721, USA
⁵ Jagiellonian University, Institute of Physics, Reymonta 4, 30-059 Cracow, Poland

Received: 4 August 2003
Published online: 12 February 2004

Abstract

After a brief review of results in few-nucleon physics based on conventional nuclear forces the steps towards nuclear forces in the effective field theory approach constrained by chiral symmetry are indicated. Several low-energy constants are adjusted to nucleon-nucleon phase shift values and in the three-nucleon system to the triton binding energy and the doublet nd scattering length. Applications based on NNLO nuclear forces to the three- and four-nucleon systems are very promissing. Finally, a new regularization scheme is described which leads to a nice convergence of the chiral expansion.