Symmetry Properties of the k-Body Embedded Unitary Ensemble of Random Matrices

Details Symmetry Properties of the k-Body Embedded Unitary Ensemble of Random Matrices Symmetry Properties of the k-Body Embedded Unitary Ensemble of Random Matrices

2001-11-29

arxiv.org/abs/cond-mat/0111568v1

Physics

Condensed Matter

LaTeX2e, 30 pages, 14 references

Scientific paper

We extend the recent study of the k-body embedded Gaussian ensembles by Benet et al. (Phys. Rev. Lett. 87 (2001) 101601-1 and Ann. Phys. 292 (2001) 67) and by Asaga et al. (cond-mat/0107363 and cond-mat/ 0107364). We show that central results of these papers can be derived directly from the symmetry properties of both, the many-particle states and the random k-body interaction. We offer new insight into the structure of the matrix of second moments of the embedded ensemble, and of the supersymmetry approach. We extend the concept of the embedded ensemble and define it purely group-theoretically.

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