Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2008-09-24
Nucl. Phys. B 812 (2009) 402-423
Physics
Condensed Matter
Strongly Correlated Electrons
12 pages, 2 figures
Scientific paper
10.1016/j.nuclphysb.2008.11.006
We derive the spectra of the D_N-type Calogero (rational) su(m) spin model, including the degeneracy factors of all energy levels. By taking the strong coupling limit of this model, in which its spin and dynamical degrees of freedom decouple, we compute the exact partition function of the su(m) Polychronakos-Frahm spin chain of D_N type. With the help of this partition function we study several statistical properties of the chain's spectrum, such as the density of energy levels and the distribution of spacings between consecutive levels.
Basu-Mallick Bireswar
Finkel Federico
González-López Artemio
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