Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2004-11-30
Physics
Nuclear Physics
Nuclear Theory
ws-procs9x6.cls, 8 pgs, Talk presented at "X Convegno su Problemi di Fisica Nucleare Teorica", Cortona (AR), 6-9 october 2004
Scientific paper
We have developed a relativistic point-coupling model of nuclear many-body dynamics constrained by the low-energy sector of QCD. The effective Lagrangian is characterized by density-dependent coupling strengths determined by chiral one- and two-pion exchange (with single and double delta isobar excitations) and by large isoscalar background fields that arise through changes of the quark condensate and the quark density at finite baryon density. The model has been tested in the analysis of nuclear ground-state properties along different isotope chains of medium and heavy nuclei. The agreement with experimental data is comparable with purely phenomenological predictions. The built-in QCD constraints and the explicit treatment of pion exchange restrict the freedom in adjusting parameters and functional forms of density-dependent couplings. It is shown that chiral pionic fluctuations play an important role for nuclear binding and saturation mechanism, whereas background fields of about equal magnitude and opposite sign generate the effective spin-orbit potential in nuclei.
Finelli Paolo
Kaiser Norbert
Vretenar Dario
Weise Wolfram
No associations
LandOfFree
Nuclear density functional constrained by low-energy QCD does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Nuclear density functional constrained by low-energy QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nuclear density functional constrained by low-energy QCD will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-14266