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Finite-energy spectral-weight distributions of a 1D correlated metal
- Carmelo, J M P (author)
- Penc, K (author)
-
- Bozi, Daniel (author)
- University of Minho, Portugal
- (creator_code:org_t)
- Amsterdam : Elsevier, 2005
- 2005
- English.
- In: Nuclear Physics B. - Amsterdam : Elsevier. - 0550-3213 .- 1873-1562. ; 725:3, s. 421-466
- Journal article (peer-reviewed)
Abstract
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- 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 onsite 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. (c) 2005 Elsevier B.V. All rights reserved.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- DIMENSIONAL HUBBARD-MODEL
- INSULATORS
- CHARGE
- CHAIN
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- University of Borås
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