TY - JOUR
T1 - Exact removal of the center-of-mass spurious states from level densities
AU - Horoi, Mihai
AU - Zelevinsky, Vladimir
PY - 2007/6/29
Y1 - 2007/6/29
N2 - We give recursive formulae for the exact removal of the contribution of the center-of-mass spurious states from the fixed-spin and parity nuclear level density found in shell-model calculations, provided the total level density for restricted configurations is known. The method is valid for a large class of problems using a harmonic oscillator basis. Using our earlier methods based on statistical spectroscopy that utilize the centroids and widths for a restricted class of fixed-spin configurations, such as N ω excitations, one can calculate very accurately level densities free of spurious states. The approach is applicable to other fermion and boson systems trapped by an oscillator potential.
AB - We give recursive formulae for the exact removal of the contribution of the center-of-mass spurious states from the fixed-spin and parity nuclear level density found in shell-model calculations, provided the total level density for restricted configurations is known. The method is valid for a large class of problems using a harmonic oscillator basis. Using our earlier methods based on statistical spectroscopy that utilize the centroids and widths for a restricted class of fixed-spin configurations, such as N ω excitations, one can calculate very accurately level densities free of spurious states. The approach is applicable to other fermion and boson systems trapped by an oscillator potential.
UR - http://www.scopus.com/inward/record.url?scp=34547267296&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.98.262503
DO - 10.1103/PhysRevLett.98.262503
M3 - Article
AN - SCOPUS:34547267296
VL - 98
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 26
M1 - 262503
ER -