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, Vol. 80, Issue 2; Other Information: DOI: 10.1103/PhysRevC.80.024901; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- 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
Mesonic and isobar degrees of freedom in the ground state of the nuclear many-body system
Journal Article
·
Sat Aug 15 00:00:00 EDT 2009
· Physical Review. C, Nuclear Physics
·
OSTI ID:21290070
Nuclear forces and nuclear matter including pions and isobars
Conference
·
Thu Jan 01 00:00:00 EST 1981
·
OSTI ID:21290070
Mesonic and isobar degrees of freedom in the ground state of the nuclear many-body system
Journal Article
·
Wed Nov 01 00:00:00 EST 1978
· Phys. Rev., C; (United States)
·
OSTI ID:21290070
+2 more