Finite-Energy Spectral-Weight Distributions of a 1D Correlated Metal

Details Finite-Energy Spectral-Weight Distributions of a 1D Correlated Metal Finite-Energy Spectral-Weight Distributions of a 1D Correlated Metal

2005-05-24

arxiv.org/abs/cond-mat/0505601v4

Nucl. Phys. B 725 (2005) 421 and Nucl. Phys. B 737 (2006) 351, Erratum

Physics

Condensed Matter

Strongly Correlated Electrons

30 pages, no figures

Scientific paper

10.1016/j.nuclphysb.2005.07.002

We derive general closed-form analytical expressions for the finite-energy one- and two-electron spectral-weight distributions of an one-dimensional correlated metal with on-site electronic repulsion. Our results also provide general expressions for the one- and two-atom spectral functions of a correlated quantum system of cold fermionic atoms in a one-dimensional optical lattice with on-site atomic repulsion. In the limit of zero spin density our spectral-function expressions provide the correct zero-spin density results. Our results reveal the dominant non-perturbative microscopic many-particle mechanisms behind the exotic spectral properties observed in quasi-one-dimensional metals and correlated systems of cold fermionic atoms in one-dimensional optical lattices.

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