Expansion dynamics of the Fulde-Ferrell-Larkin-Ovchinnikov state
arXiv:1107.0282 · doi:10.1103/PhysRevA.84.041601
Abstract
We consider a two-component Fermi gas in the presence of spin imbalance, modeling the system in terms of a one-dimensional attractive Hubbard Hamiltonian initially in the presence of a confining trap potential. With the aid of the time-evolving block decimation method, we investigate the dynamics of the initial state when the trap is switched off. We show that the dynamics of a gas initially in the Fulde-Ferrel-Larkin-Ovchinnikov (FFLO) state is decomposed into the independent expansion of two fluids, namely the paired and the unpaired particles. In particular, the expansion velocity of the unpaired cloud is shown to be directly related to the FFLO momentum. This provides an unambiguous signature of the FFLO state in a remarkably simple way.
Supplementary material included
References in corpus (11)
- Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
- Pairing states of a polarized Fermi gas trapped in a one-dimensional optical lattice
- Quasi-one-dimensional polarized Fermi superfluids
- Fulde-Ferrell-Larkin-Ovchinnikov superfluidity in one-dimensional optical lattices
- Density-Matrix Renormalization Group Study of Trapped Imbalanced Fermi Condensates
- Exact Numerical Study of Pair Formation with Imbalanced Fermion Populations
- Theory of quasi-one dimensional imbalanced Fermi gases
- Spectral signatures of the Fulde-Ferrell-Larkin-Ovchinnikov order parameter in one-dimensional optical lattices
- Expansion dynamics in the one-dimensional Fermi-Hubbard model
- Probing the FFLO phase by double occupancy modulation spectroscopy
- Finite temperature QMC study of the one-dimensional polarized Fermi gas
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- Fulde-Ferrell Pairing instability in Spin-Orbit Coupled Fermi Gas
- Dynamics of an impurity in a one-dimensional lattice
- Fulde-Ferrell states and Berezinskii-Kosterlitz-Thouless phase transition in two-dimensional imbalanced Fermi gases
- Expansion of 1D polarized superfluids: The FFLO state reveals itself
- Expansion velocity of a one-dimensional, two-component Fermi gas during the sudden expansion in the ballistic regime
- Interaction quantum quenches in the one-dimensional Fermi-Hubbard model with spin imbalance
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- Enhanced visibility of the Fulde-Ferrell-Larkin-Ovchinnikov state in one dimensional Bose-Fermi mixtures near the immiscibility point
- Population imbalance in the extended Fermi-Hubbard model
- Dimensional Crossover in a Spin-imbalanced Fermi gas
- FFLO correlation and free fluids in the one-dimensional attractive Hubbard model
- Pure Fulde-Ferrell-Larkin-Ovchinnikov state in optical lattices
- Simulating artificial one-dimensional physics with ultra-cold fermionic atoms: three exemplary themes
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- Protocol to engineer Fulde-Ferrell-Larkin-Ovchinnikov states in a cold Fermi gas
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