2006/09/14 by Gao Xianlong, Matteo Rizzi, M. Rizzi +11 · 2 citations
Biochemistry, Genetics and Molecular Biology · Chemistry · Medicine · Physics and Astronomy · #Apoptosis #Atomic physics #Biochemistry #Biology #Cancer research #Chemistry #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Electroporation #Excited state #Fermi gas #Fermion #Feshbach resonance #Gene #Ground state #Iodide #Matter wave #Medicine #Microbial Inactivation Methods #Molecular biology #Optical lattice #Pairing #Physics #Physics of Superconductivity and Magnetism #Programmed cell death #Propidium iodide #Quantum many-body systems #Quantum mechanics #Scattering #Scattering length #Singlet state #State of matter #Superconductivity #Superfluidity #Ultracold atom #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.98.030404
published as Phys. Rev. Lett. 98, 030404 (2007) · 10 pages, 3 figures, 1 Table, submitted to Phys. Rev. on July 25th 2006
arxiv created 2006/09/14 · arxiv updated 2009/12/01 · openalex publication_date 2010/11/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/06/11
The Luther-Emery liquid is a state of matter that is predicted to occur in one-dimensional systems of interacting fermions and is characterized by a gapless charge spectrum and a gapped spin spectrum. In this Letter we discuss a realization of the Luther-Emery phase in a trapped cold-atom gas. We study by means of the density-matrix renormalization-group technique a two-component atomic Fermi gas with attractive interactions subject to parabolic trapping inside an optical lattice. We demonstrate how this system exhibits compound phases characterized by the coexistence of spin pairing and atomic-density waves. A smooth crossover occurs with increasing magnitude of the atom-atom attraction to a state in which tightly bound spin-singlet dimers occupy the center of the trap. The existence of atomic-density waves could be detected in the elastic contribution to the light-scattering diffraction pattern.