Covariant and self-consistent vertex corrections for pions and isobars in nuclear matter
Journal Article
·
· Physical Review. C, Nuclear Physics
- Department of Theoretical Physics, University of Pecs, Ifjusag u. 6, H-7624 Pecs (Hungary)
We evaluate the pion and isobar propagators in cold nuclear matter self-consistently applying a covariant form of the isobar-hole model. Migdal's vertex correction effects are considered systematically in the absence of phenomenological soft form factors. Saturated nuclear matter is modeled by scalar and vector mean fields for the nucleon. It is shown that the short-range dressing of the {pi}N{delta} vertex has a significant effect on the pion and isobar properties. Using realistic parameters sets we predict a downward shift of about 50 MeV for the {delta} resonance at nuclear saturation density. The pionic soft modes are much less pronounced than in previous studies.
- OSTI ID:
- 21290070
- Journal Information:
- Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 2 Vol. 80; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
Similar Records
Photoabsorption off nuclei with self-consistent vertex corrections
Nuclear forces and nuclear matter including pions and isobars
Pion condensation and density isomerism in nuclear matter
Journal Article
·
Sat Aug 15 00:00:00 EDT 2009
· Physical Review. C, Nuclear Physics
·
OSTI ID:21290071
Nuclear forces and nuclear matter including pions and isobars
Conference
·
Wed Dec 31 23:00:00 EST 1980
·
OSTI ID:6485433
Pion condensation and density isomerism in nuclear matter
Journal Article
·
Sat Sep 01 00:00:00 EDT 1979
· Phys. Rev., C; (United States)
·
OSTI ID:6089512