Polarized Superfluidity in the imbalanced attractive Hubbard model

Abstract

We investigate the attractive Hubbard model in infinite spatial dimensions by means of dynamical mean-field theory. Using a continuous-time Monte Carlo algorithm in the Nambu formalism as an impurity solver, we directly deal with the superfluid phase in the population imbalanced system. By calculating the superfluid order parameter, the magnetization, and the density of states, we discuss how the polarized superfluid state is realized in the attractive Hubbard model at quarter filling. We find that a drastic change in the density of states is induced by spin imbalanced populations in the superfluid state.

7 pages and 8 figures

References in corpus (34)

• Observation of resonance condensation of fermionic atom pairs
• The numerical renormalization group method for quantum impurity systems
• A continuous-time solver for quantum impurity models
• Pairing and Phase Separation in a Polarized Fermi Gas
• Observation of Bose-Einstein Condensation of Molecules
• Fermionic Superfluidity with Imbalanced Spin Populations and the Quantum Phase Transition to the Normal State
• Experimental Study of the BEC-BCS Crossover Region in Lithium 6
• Continuous Time Quantum Monte Carlo method for fermions
• Fulde-Ferrell-Larkin-Ovchinnikov Superconducting State in CeCoIn5
• Fulde-Ferrell-Larkin-Ovchinnikov State in Heavy Fermion Superconductors
• Hybridization expansion impurity solver: General formulation and application to Kondo lattice and two-orbital models
• Anomalous Normal-State Properties of High-T${}_c$ Superconductors -- Intrinsic Properties of Strongly Correlated Electron Systems?
• Interior Gap Superfluidity
• BEC-BCS crossover in "magnetized" Feshbach-resonantly paired superfluids
• Continuous-time auxiliary field Monte Carlo for quantum impurity models
• Phase separation in a polarized Fermi gas at zero temperature
• Phase diagram of a cold polarized Fermi gas
• Diagrammatic Determinantal methods: projective schemes and applications to the Hubbard-Holstein model
• Dynamical mean-field theory for pairing and spin gap in the attractive Hubbard model
• Effects of Pauli paramagnetism on superconducting vortex phase diagram in strong fields
• Density-Matrix Renormalization Group Study of Trapped Imbalanced Fermi Condensates
• Critical temperature for the two-dimensional attractive Hubbard Model
• Energetic balance of the superconducting transition across the BCS-Bose E instein crossover in the attractive Hubbard model
• Finite temperature phase diagram of a polarized Fermi gas in an optical lattice
• BCS - BEC crossover at T=0: A Dynamical Mean Field Theory Approach
• Continuous-Time Quantum Monte Carlo Method for the Coqblin-Schrieffer Model
• A weak coupling CTQMC study of the single impurity and periodic Anderson models with s-wave superconducting baths
• Superconductivity in the Two-Band Hubbard Model in Infinite Dimensions
• Dynamical mean-field theory and numerical renormalization group study of superconductivity in the attractive Hubbard model
• Luther-Emery Phase and Atomic-Density Waves in a Trapped Fermion Gas
• Supersolid state of ultracold fermions in an optical lattice
• Polarized superfluidity in the attractive Hubbard model with population imbalance
• Supersolids in confined fermions on one-dimensional optical lattices
• Spatially-modulated Superfluid States in Fermionic Optical Ladder Systems with Repulsive Interactions

Cited by in corpus (21)

• Dynamical mean-field theory for bosons
• Low temperature properties of the infinite-dimensional attractive Hubbard model
• Magnetism and domain formation in SU(3)-symmetric multi-species Fermi mixtures
• Superconductivity in the two-band Hubbard model
• Finite temperature stability and dimensional crossover of exotic superfluidity in lattices
• Exotic superfluid states of lattice fermions in elongated traps
• LDA+DMFT approach to ordering phenomena and the structural stability of correlated materials
• Superfluidity and Density Order in a Bilayer Extended Hubbard Model
• Non-local quantum fluctuations and fermionic superfluidity in the imbalanced attractive Hubbard model
• Quantum Monte Carlo study of nonequilibrium transport through a quantum dot coupled to normal and superconducting leads
• Spontaneously symmetry breaking states in the attractive SU$(N)$ Hubbard model
• Superfluid state in the periodic Anderson model with attractive interactions
• Stability of the Superfluid State in Three-Component Fermionic Optical Lattice Systems
• Spontaneously orbital-selective superconductivity in a three-orbital Hubbard model
• Dimensional Crossover in a Spin-imbalanced Fermi gas
• Mott transitions in the Hubbard model with spatially-modulated interactions
• Polarized superfluid state in a three-dimensional fermionic optical lattice
• Maximum entropy analytic continuation of anomalous self-energies
• Stability of FFLO states in optical lattices with bilayer structure
• Superfluid gap formation in a fermionic optical lattice with spin imbalanced populations
• Nonequilibrium transport through a quantum dot coupled to normal and superconducting leads