Equation of State and Applications to AstrophysicsNo Access
NUCLEAR GROUND STATES AND EXCITATIONS IN RELATIVISTIC NUCLEAR MODELS
https://doi.org/10.1142/S0217732308029642Cited by:0 (Source: Crossref)
Abstract
We study the role of the negative-energy nucleon states of relativistic nuclear models in nuclear ground states and excitations. The self-consistent calculation including the negative-energy states are performed by using the derivative expansion in terms of the meson field, which is known to provide a good description of the vacuum fluctuations in nuclear ground states quantitatively. A remarkable effect of the inclusion of the negative-energy contribution into the model is the increase of the nucleon effective mass. In particular, this produces the better description for the isoscalar quadrupole resonances, and essentially different results for the Gamow-Teller resonances.
PACS: 21.10.−k, 21.60.Jz, 13.75.Cs, 23.20.−g
