Chiral pion-nucleon dynamics in finite nuclei: spin-isospin excitations

Details Chiral pion-nucleon dynamics in finite nuclei: spin-isospin excitations Chiral pion-nucleon dynamics in finite nuclei: spin-isospin excitations

2006-12-06

arxiv.org/abs/nucl-th/0612026v2

Nucl.Phys.A791:57-67,2007

Physics

Nuclear Physics

Nuclear Theory

17 pages, 6 figures, elsart class. Minor revisions, Nuclear Physics A in print

Scientific paper

10.1016/j.nuclphysa.2007.04.007

The nuclear density functional framework, based on chiral dynamics and the symmetry breaking pattern of low-energy QCD, is extended to the description of collective nuclear excitations. Starting from the relativistic point-coupling Lagrangian previously introduced [Nucl. Phys. A770 (2006) 1], the proton-neutron (quasiparticle) random phase approximation is formulated and applied to investigate the role of chiral pion-nucleon dynamics in excitation modes involving spin and isospin degrees of freedom, e.g. isobaric analog states and Gamow-Teller resonances.

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