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

• Main Authors: Carmelo, J. M. P, Penc, K, Bozi, D
• Format: Journal Article
• Language: English
• Published: 24-05-2005
• Subjects: Physics - Strongly Correlated Electrons
• DOI: 10.48550/arxiv.cond-mat/0505601

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