6533b7ddfe1ef96bd12749dc
RESEARCH PRODUCT
Two-body contributions to the effective mass in nuclear effective interactions
D. DavesneKarim BennaceurJesús NavarroAlessandro PastoreJ. Meyersubject
PhysicsNuclear Theory[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]010308 nuclear & particles physicsFOS: Physical sciencesNuclear matter01 natural sciencesAccepted and experimental valueNuclear Theory (nucl-th)Effective mass (solid-state physics)0103 physical sciences010306 general physicsSaturation (chemistry)Nuclear theory[ PHYS.NUCL ] Physics [physics]/Nuclear Theory [nucl-th]Mathematical physicsdescription
Starting from general expressions of well-chosen symmetric nuclear matter quantities derived for both zero- and finite-range effective theories, we derive the contributions to the effective mass. We first show that, independently of the range, the two-body contribution is enough to describe correctly the saturation mechanism but gives an effective mass value around $m^*/m \simeq 0.4$. Then, we show that the full interaction (by instance, an effective two-body density-dependent term on top of the pure two-body term) is needed to reach the accepted value $m^*/m \simeq 0.7-0.8$.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-04-09 |