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 introduced in [P. Finelli, N. Kaiser, D. Vretenar, W. Weise, Nucl. Phys. A 770 (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.
Chiral pion–nucleon dynamics in finite nuclei: Spin–isospin excitations / P. Finelli; N. Kaiser; D. Vretenar; W. Weise. - In: NUCLEAR PHYSICS. A. - ISSN 0375-9474. - STAMPA. - 791:(2007), pp. 57-67. [10.1016/j.nuclphysa.2007.04.007]
Chiral pion–nucleon dynamics in finite nuclei: Spin–isospin excitations
FINELLI, PAOLO;
2007
Abstract
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 introduced in [P. Finelli, N. Kaiser, D. Vretenar, W. Weise, Nucl. Phys. A 770 (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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
