Spin Structure of Many-Body Systems with Two-Body Random Interactions
Nuclear Theory
2009-08-14 v1 Mesoscale and Nanoscale Physics
Chaotic Dynamics
Abstract
We investigate the spin structure of many-fermion systems with a spin-conserving two-body random interaction. We find a strong dominance of spin-0 ground states and considerable correlations between energies and wave functions of low-lying states with different spin, but no indication of pairing. The spectral densities exhibit spin-dependent shapes and widths, and depend on the relative strengths of the spin-0 and spin-1 couplings in the two-body random matrix. The spin structure of low-lying states can largely be explained analytically.
Keywords
Cite
@article{arxiv.nucl-th/0007013,
title = {Spin Structure of Many-Body Systems with Two-Body Random Interactions},
author = {Lev Kaplan and Thomas Papenbrock and Calvin W. Johnson},
journal= {arXiv preprint arXiv:nucl-th/0007013},
year = {2009}
}
Comments
10 pages, including 3 figures