Pushing and Cranking Corrections to the Meson Fields of the Bosonized Nambu \& Jona-Lasinio Model
| dc.creator | Schleif, M. | |
| dc.creator | Wuensch, R. | |
| dc.date | 1994-09-13 | |
| dc.date | 1994-09-14 | |
| dc.date.accessioned | 2026-07-07T09:04:45Z | |
| dc.date.available | 2026-07-07T09:04:45Z | |
| dc.description | We study the effect of center-of-mass motion and rotational corrections on hedgehog meson fields in the bosonized two-flavor Nambu \& Jona-Lasinio model. To remove the spurious motion and to restore good spin and isospin we consider a boosted and rotating soliton instead a static soliton at rest. Modified meson fields are obtained by minimizing a corrected effective energy functional. The importance of the modification is estimated by evaluating expectation values of several observables. Stabile solitonic configurations are obtained for $M\gapp$ 300\,MeV, while static solitons exists for $M\gapp$ 350\,MeV only. Despite the considerable size of the energy corrections (30-50\% of the soliton energy) the main features of the static soliton are preserved. Modified meson profiles are somewhat narrower than static ones and have a different asymptotic behavior, which depends on the isospin quantum number. The modifications increase with increasing constituent quark mass. The valence-quark picture dominates up to very large constituent quark masses. In the physically relevant mass region, the root-mean square radius of the quark distribution is reduced by less than 10 percent. The $Δ$--nucleon mass-splitting is still weaker affected. | |
| dc.description | 16 pages, report FZR-55, LaTeX, 10 figures available as uuencoded postscript file figs.uu via anonymous ftp from the directory /ftp/pub/preps/ of ftp@hera.fz-rossendorf.de (149.220.4.2) | |
| dc.identifier | https://arxiv.org/abs/nucl-th/9409011 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/9409011 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/149492 | |
| dc.subject | Nuclear Theory | |
| dc.title | Pushing and Cranking Corrections to the Meson Fields of the Bosonized Nambu \& Jona-Lasinio Model | |
| dc.type | text |