Phase separation of superfluids in the chain of four-component ultracold atoms

2014/09/10 by Gergely Barcza, G. Barcza, E. Szirmai +3 · 1 citation
Physics and Astronomy · #Atomic physics #Cold Atom Physics and Bose-Einstein Condensates #Component (thermodynamics) #Condensed matter physics #Excited state #Hyperfine structure #Phase (matter) #Physics #Quantum #Quantum many-body systems #Quantum mechanics #Quantum, superfluid, helium dynamics #Singlet state #Spin (aerodynamics) #Superfluidity #Thermodynamics #Ultracold atom #cond-mat.quant-gas

paper · pdf · doi:10.1140/epjst/e2015-02383-1

arxiv created 2014/09/10 · openalex publication_date 2015/04/01 · arxiv updated 2015/06/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We investigate the competition of various exotic superfluid states in a chain of spin-polarized ultracold fermionic atoms with hyperfine spin F = 3/2 and s-wave contact interactions. We show that the ground state is an exotic inhomogeneous mixture in which two distinct superfluid phases --- spin-carrying pairs and singlet quartets --- form alternating domains in an extended region of the parameter space.

Citations

• Fulde-Ferrell-Larkin-Ovchinnikov state in the one-dimensional attractive Hubbard model and its fingerprint in spatial noise correlations
• Fulde-Ferrell-Larkin-Ovchinnikov pairing in one-dimensional optical lattices
• Many-body physics with ultracold gases
• Counterflow and paired superfluidity in one-dimensional Bose mixtures in optical lattices
• Phase separation and pairing regimes in the one-dimensional asymmetric Hubbard model
• Density-matrix algorithms for quantum renormalization groups
• Confinement versus deconfinement of Cooper pairs in one-dimensional spin-3∕2fermionic cold atoms
• Hidden symmetry and quantum phases in spin-3/2 cold atomic systems
• The density-matrix renormalization group
• Phase separation of trapped spin-imbalanced Fermi gases in one-dimensional optical lattices

Cited by

• Phases of one-dimensional SU(N) cold atomic Fermi gases—From molecular Luttinger liquids to topological phases