Av. Afanasjev et al., Moments of inertia of nuclei in the rare earth region: A relativistic versus nonrelativistic investigation - art. no. 054306, PHYS REV C, 6205(5), 2000, pp. 4306
A parameter-free investigation of the moments of inertia of ground-state ro
tational bands in well-deformed rare-earth nuclei is carried out using cran
ked relativistic Hartree-Bogoliubov (CRHB) and nonrelativistic cranked Hart
ree-Fock-Bogoliubov (CHFB) theories. In CRHB theory, the relativistic field
s are determined by the nonlinear Lagrangian with the NL1 force and the pai
ring interaction by the central part of a finite-range Gogny D1S force. In
CHFB theory, the properties in particle-hole and particle-particle channels
are defined solely by Gogny D1S forces. Using an approximate particle numb
er projection before variation by means of the Lipkin-Nogami method improve
s the agreement with the experimental data, especially in CRHB theory. The
effect of the particle number projection on the moments of inertia and pair
ing energies is larger in relativistic than in nonrelativistic theory.