The equation of motion phonon method is adopted to investigate the dipole response in neutron rich nuclei. The calculation is carried out in a space spanned by oneand two-phonon basis states. It makes direct use of a nucleon-nucleon optimized chiral potential complemented with a density dependent term simulating a three-body force and is fully selfconsistent. The inclusion of the two-phonon states induces a pronounced fragmentation of both giant and pygmy resonances consistently with recent experiments.
Nuclear Spectroscopic Properties within a Selfconsistent Multiphonon Approach / De Gregorio, G.; Knapp, F.; Lo I. u. d. i. c. e., . N.; Vesely, P.; Andreozzi, Francesco; Porrino, Antonio. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 724:(2016), pp. 012011-1-012055-7. [10.1088/1742-6596/724/1/012011]
Nuclear Spectroscopic Properties within a Selfconsistent Multiphonon Approach
ANDREOZZI, FRANCESCO;PORRINO, ANTONIO
2016
Abstract
The equation of motion phonon method is adopted to investigate the dipole response in neutron rich nuclei. The calculation is carried out in a space spanned by oneand two-phonon basis states. It makes direct use of a nucleon-nucleon optimized chiral potential complemented with a density dependent term simulating a three-body force and is fully selfconsistent. The inclusion of the two-phonon states induces a pronounced fragmentation of both giant and pygmy resonances consistently with recent experiments.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
