Loss-induced phase separation and pairing for three-species atomic lattice fermions

2010/10/31 by A. Privitera, Irakli Titvinidze, I. Titvinidze +8
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #Physics of Superconductivity and Magnetism #cond-mat.quant-gas

paper · pdf · doi:10.1103/physreva.84.021601

published as Phys. Rev. A 84, 021601(R) (2011) · 5 pages, 3 figures. Expanded text

openalex publication_date 2011/08/03 · arxiv created 2011/12/21 · arxiv updated 2011/12/22 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We study the physics of a three-component Fermi gas in an optical lattice, in the presence of a three-body constraint arising due to strong three-body loss. Using analytical and numerical techniques, we show that an atomic color superfluid phase is formed in this system and undergoes phase separation between unpaired fermions and superfluid pairs. This phase separation survives well above the critical temperature, giving a clear experimental signature of the three-body constraint.

Citations

• Thermometry and signatures of strong correlations from Raman spectroscopy of fermionic atoms in optical lattices
• Color Superfluidity and “Baryon” Formation in Ultracold Fermions
• Collisional Stability of a Three-Component Degenerate Fermi Gas
• Strong Dissipation Inhibits Losses and Induces Correlations in Cold Molecular Gases
• Trionic phase of ultracold fermions in an optical lattice: A variational study
• BCS pairing in Fermi systems withNdifferent hyperfine states
• Supersolid Bose-Fermi Mixtures in Optical Lattices