Stability and pairing in quasi-one-dimensional Bose-Fermi mixtures

Abstract

We consider a mixture of single-component bosonic and fermionic atoms in an array of coupled one-dimensional "tubes". For an attractive Bose-Fermi interaction, we show that the system exhibits phase separation instead of the usual collapse. Moreover, above a critical inter-tube hopping, all first-order instabilities disappear in both attractive and repulsive mixtures. The possibility of suppressing instabilities in this system suggests a route towards the realization of paired phases, including a superfluid of p-wave pairs unique to the coupled-tube system, and quantum critical phenomena.

4 pages, 2 figures

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Cited by in corpus (12)

• Mass imbalance effect in resonant Bose-Fermi mixtures
• Induced pairing of fermionic impurities in a one-dimensional strongly correlated Bose gas
• Multimer formation in 1D two-component gases and trimer phase in the asymmetric attractive Hubbard model
• A single fermion in a Bose Josephson Junction
• Dissipative Effects on the Superfluid to Insulator Transition in Mixed-dimensional Optical Lattices
• Quantum Coherent States of Interacting Bose-Fermi Mixtures in One Dimension
• Possible quantum phase-manipulation of a two-leg ladder in mixed-dimensional fermionic cold atoms
• One-dimensional repulsive Hubbard model with mass imbalance: Orders and filling anomaly
• Structure and stability of quasi-two-dimensional boson-fermion mixtures with vortex-antivortex superposed states
• Momentum reconstruction and contact of the one-dimensional Bose-Fermi mixture
• Phase Equilibrium of Binary Mixtures in Mixed Dimensions
• Composite pairing and superfluidity in a one-dimensional resonant Bose-Fermi mixture