Spin projection in the shell model Monte Carlo method and the spin distribution of nuclear level densities

Details Spin projection in the shell model Monte Carlo method and the spin distribution of nuclear level densities Spin projection in the shell model Monte Carlo method and the spin distribution of nuclear level densities

2006-07-27

arxiv.org/abs/nucl-th/0607062v1

Phys.Rev.Lett.99:162504,2007

Physics

Nuclear Physics

Nuclear Theory

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.99.162504

We introduce spin projection methods in the shell model Monte Carlo approach and apply them to calculate the spin distribution of level densities for iron-region nuclei using the complete $(pf+g_{9/2})$-shell. We compare the calculated distributions with the spin-cutoff model and extract an energy-dependent moment of inertia. For even-even nuclei and at low excitation energies, we observe a significant suppression of the moment of inertia and odd-even staggering in the spin dependence of level densities.

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