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

J. M. P. Carmelo·K. Penc·D. Bozi
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Abstract

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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J. M. P. Carmelo, K. Penc, D. Bozi. 2006-04-21. Finite-Energy Spectral-Weight Distributions of a 1D Correlated Metal. https://doi.org/10.1016/j.nuclphysb.2005.07.002

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