Quantum phases of a Feshbach-resonant atomic Bose gas in one dimension
arXiv:cond-mat/0506216 · doi:10.1103/PhysRevA.73.043606
Abstract
We study an atomic Bose gas with an s-wave Feshbach resonance in a one-dimensional optical lattice, with the densities of atoms and molecules incommensurate with the lattice. At zero temperature, most of the parameter region is occupied by a phase in which the superfluid fluctuations of atoms and molecules are the predominant ones, due to the phase fluctuations of atoms and molecules being locked by a Josephson coupling between them. When the density difference between atoms and molecules is commensurate with the lattice, two additional phases may exist: the two component Luttinger liquid where both the atomic and molecular sectors are gapless, and the inter-channel charge density wave where the relative density fluctuations between atoms and molecules are frozen at low energy.
4+epsilon pages, 3 figures; references added
References in corpus (10)
- Observation of Bose-Einstein Condensation of Molecules
- Instabilities in binary mixtures of one-dimensional quantum degenerate gases
- Luttinger liquid of polarons in one-dimensional boson-fermion mixtures
- Quantum phase transition in an atomic Bose gas with a Feshbach resonance
- Superfluid transitions in bosonic atom-molecule mixtures near Feshbach resonance
- Feshbach resonances in an optical lattice
- Quantum phase transition in an atomic Bose gas near a Feshbach resonance
- Mott insulator to superfluid transition of ultracold bosons in an optical lattice near a Feshbach resonance
- Quantum decoupling transition in a one-dimensional Feshbach-resonant superfluid
- Atom-molecule coherence in a one-dimensional system