EVALUATION OF ONE MESON LOOP CORRECTIONS FOR NUCLEAR-MATTER BY NUCLEAR SCHWINGER-DYSON EQUATIONS WITH BARE VERTEX APPROXIMATION

Authors
HASEGAWA A KOIDE K MITSUMORI T MURAKI M KOUNO H NAKANO M
Citation
A. Hasegawa et al., EVALUATION OF ONE MESON LOOP CORRECTIONS FOR NUCLEAR-MATTER BY NUCLEAR SCHWINGER-DYSON EQUATIONS WITH BARE VERTEX APPROXIMATION, Progress of theoretical physics, 92(2), 1994, pp. 331-337
Citations number
15
Categorie Soggetti
Physics
Journal title
Progress of theoretical physics → ACNP
ISSN journal
0033068X
Volume
92
Issue
2
Year of publication
1994
Pages
331 - 337
Database
ISI
SICI code
0033-068X(1994)92:2<331:EOOMLC>2.0.ZU;2-Y
Abstract
The saturation property of nuclear matter is investigated under bare v ertex nuclear Schwinger-Dyson approximation in the sigma-omega model. Instabilities are removed by the parameterization of sigma-meson mass in addition to coupling constants. One meson loop corrections to the b inding energy are reduced drastically due to the sigma-omega mixing, w hile the mean field keeps its large contribution because of the small sigma-meson mass and the small coupling constant in the sigma-nucleon interaction.