Atom-molecule coherence in a one-dimensional system
| dc.creator | Citro, R. | |
| dc.creator | Orignac, E. | |
| dc.date | 2005-05-30 | |
| dc.date | 2005-10-02 | |
| dc.date.accessioned | 2026-07-07T06:20:20Z | |
| dc.date.available | 2026-07-07T06:20:20Z | |
| dc.description | We study a model of one-dimensional fermionic atoms that can bind in pairs to form bosonic molecules. We show that at low energy, a coherence develops between the molecule and fermion Luttinger liquids. At the same time, a gap opens in the spin excitation spectrum. The coherence implies that the order parameters for the molecular Bose-Einstein Condensation and the atomic BCS pairing become identical. Moreover, both bosonic and fermionic charge density wave correlations decay exponentially, in contrast with a usual Luttinger liquid. We exhibit a Luther-Emery point where the systems can be described in terms of noninteracting pseudofermions. At this point, we provide closed form expressions for the density-density response functions. | |
| dc.description | 5 pages, no figures, Revtex 4; (v2) added a reference to cond-mat/0505681 where related results are reported; (v3) Expression of correlation functions given in terms of generalized hypergeometric functions | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0505706 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0505706 | |
| dc.identifier | Phys. Rev. Lett. 95, 130402 (2005) | |
| dc.identifier | doi:10.1103/PhysRevLett.95.130402 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/95300 | |
| dc.subject | Other Condensed Matter | |
| dc.subject | Superconductivity | |
| dc.title | Atom-molecule coherence in a one-dimensional system | |
| dc.type | text |