2005/05/31 by J. M. P. Carmelo, Karlo Penc, K. Penc +1 · 5 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum chaos and dynamical systems #Semiconductor Quantum Structures and Devices #cond-mat.str-el
paper · pdf · doi:10.1016/j.nuclphysb.2005.07.002
published as Nucl. Phys. B 725 (2005) 421 and Nucl. Phys. B 737 (2006) 351, Erratum · 30 pages, no figures
openalex publication_date 2005/07/26 · arxiv created 2006/04/21 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.