Ground states and dynamics of population-imbalanced Fermi condensates in one dimension
arXiv:1002.1433 · doi:10.1088/1367-2630/12/5/055029
Abstract
By using the numerically exact density-matrix renormalization group (DMRG) approach, we investigate the ground states of harmonically trapped one-dimensional (1D) fermions with population imbalance and find that the Larkin-Ovchinnikov (LO) state, which is a condensed state of fermion pairs with nonzero center-of-mass momentum, is realized for a wide range of parameters. The phase diagram comprising the two phases of i) an LO state at the trap center and a balanced condensate at the periphery and ii) an LO state at the trap center and a pure majority component at the periphery, is obtained. The reduced two-body density matrix indicates that most of the minority atoms contribute to the LO-type quasi-condensate. With the time-dependent DMRG, we also investigate the real-time dynamics of a system of 1D fermions in response to a spin-flip excitation.
arXiv comment20 pages, 15 figures, accepted for publication in New Journal of Physics
References in corpus (62)
- The density-matrix renormalization group
- Efficient classical simulation of slightly entangled quantum computations
- Atomic Scattering in Presence of an External Confinement and a Gas of Impenetrable Bosons
- Real time evolution using the density matrix renormalization group
- Time-dependent density-matrix renormalization-group using adaptive effective Hilbert spaces
- Realization of Bose-Einstein condensates in lower dimensions
- Exploring phase coherence in a 2D lattice of Bose-Einstein condensates
- Quench dynamics and non equilibrium phase diagram of the Bose-Hubbard model
- Confinement induced molecules in a 1D Fermi gas
- Strongly correlated fermions after a quantum quench
- Probing quantum and thermal noise in an interacting many-body system
- Attractive Fermi gases with unequal spin populations in highly elongated traps
- Phase diagram of a strongly interacting polarized Fermi gas in one dimension
- Nonequilibrium electron transport using the density matrix renormalization group
- Observations of density fluctuations in an elongated Bose gas: ideal gas and quasi-condensate regimes
- Spectral functions in one-dimensional quantum systems at T>0
- Time-dependent density-matrix renormalization group: A systematic method for the study of quantum many-body systems out-of-equilibrium
- Time-step targetting methods for real-time dynamics using DMRG
- Pairing states of a polarized Fermi gas trapped in a one-dimensional optical lattice
- Time evolution algorithms for Matrix Product States and DMRG
- Inhomogeneous superconducting state in quasi-one-dimensional systems
- Time evolution of correlations in strongly interacting fermions after a quantum quench
- Spin-charge separation in cold Fermi-gases: a real time analysis
- Fulde-Ferrell-Larkin-Ovchinnikov superfluidity in one-dimensional optical lattices
- Universal Fermi gases in mixed dimensions
- Exact quantum Monte Carlo study of one dimensional trapped fermions with attractive contact interactions
- Density-Matrix Renormalization Group Study of Trapped Imbalanced Fermi Condensates
- Exact Numerical Study of Pair Formation with Imbalanced Fermion Populations
- Probing local relaxation of cold atoms in optical superlattices
- The FFLO state in the one-dimensional attractive Hubbard model and its fingerprint in the spatial noise correlations
- Quantum distillation: dynamical generation of low-entropy states of strongly correlated fermions in an optical lattice
- Applying Adaptive Time-Dependent DMRG to Calculate the Conductance of Strongly Correlated Nanostructures
- Dynamics of the superfluid to Mott insulator transition in one dimension
- Time evolution of one-dimensional Quantum Many Body Systems
- Comment on "Time-Dependent Density-Matrix Renormalization Group: A Systematic Method for the Study of Quantum Many-Body Out-of- Equilibrium Systems"
- Paired states in spin-imbalanced atomic Fermi gases in one dimension
- Real-time dynamics at finite temperature by DMRG: A path-integral approach
- Finite temperature phase diagram of a spin-polarized ultracold Fermi gas in a highly elongated harmonic trap
- Dynamics of one-dimensional Bose liquids: Andreev-like reflection at Y-junctions and absence of the Aharonov-Bohm effect
- Ground-state reference systems for expanding correlated fermions in one dimension
- Spectral signatures of the Fulde-Ferrell-Larkin-Ovchinnikov order parameter in one-dimensional optical lattices
- Phase separation of trapped spin-imbalanced Fermi gases in one-dimensional optical lattices
- Pair correlations of a spin-imbalanced Fermi gas on two-leg ladders
- Quantum phase diagram of fermion mixtures with population imbalance in one-dimensional optical lattices
- Multi-particle composites in density-imbalanced quantum fluids
- Coherent matter waves emerging from Mott-insulators
- Quantum polarization spectroscopy of correlations in attractive fermionic gases
- Confinement-induced Efimov resonances in Fermi-Fermi mixtures
- BCS-BEC crossover and the disappearance of FFLO-correlations in a spin-imbalanced, one-dimensional Fermi gas
- Angular Fulde-Ferrell-Larkin-Ovchinnikov state in cold fermion gases in a toroidal trap
- Pair formation and collapse in imbalanced Fermion populations with unequal masses
- Heavily Damped Motion of One-Dimensional Bose Gases in an Optical Lattice
- Is spin-charge separation observable in a transport experiment?
- Boson-Fermion Resonance Model in One Dimension
- Population imbalanced fermions in harmonically trapped optical lattices
- Finite-Temperature Behavior of an Inter-species Fermionic Superfluid with Population Imbalance
- FFLO vs Bose-Fermi mixture in polarized 1D Fermi gas on a Feshbach resonance: a 3-body study
- Correlation Effects on Atom Density Profiles of 1-D and 2-D Polarized Atomic-Fermi-Gas Loaded on Optical Lattice
- Mott Phase in Polarized Two-component Atomic Fermi Lattice Gas:A Playground for S=1/2 Heisenberg Model in Magnetic Field
- Suppression or enhancement of the Fulde-Ferrell-Larkin-Ovchinnikov order in a one-dimensional optical lattice with particle correlated tunnelling
- Nonadiabatic Dynamics of Ultracold Fermions in Optical Superlattices
- An Improved Initialization Procedure for the Density-Matrix Renormalization Group
Cited by in corpus (16)
- Fermi gases in one dimension: From Bethe Ansatz to experiments
- Ultra-cold Polarized Fermi Gases
- Strongly Interacting Quantum Gases in One-Dimensional Traps
- Expansion dynamics in the one-dimensional Fermi-Hubbard model
- Expansion of 1D polarized superfluids: The FFLO state reveals itself
- Finite temperature QMC study of the one-dimensional polarized Fermi gas
- Exotic superfluid states of lattice fermions in elongated traps
- Universal quantum behaviors of interacting fermions in 1D traps: from few particles to the trap thermodynamic limit
- Interaction quantum quenches in the one-dimensional Fermi-Hubbard model with spin imbalance
- Unconventional pairing in one-dimensional systems of a few mass-imbalanced ultracold fermions
- Dimensional Crossover in a Spin-imbalanced Fermi gas
- Asymptotic correlation functions and FFLO signature for the one-dimensional attractive Hubbard model
- Collision of one dimensional (1D) spin polarized Fermi gases in an optical lattice
- Universal thermodynamics of the one-dimensional attractive Hubbard model
- Unconventional pairings of spin-orbit coupled attractive degenerate Fermi gas in a one dimensional optical lattice
- Spin-orbit coupled repulsive Fermi atoms in a one-dimensional optical lattice