Lattice Boltzmann simulations of a two-dimensional Fermi gas at unitarity
arXiv:1507.05975 · doi:10.1103/PhysRevA.93.013618
Abstract
We present fully nonlinear dissipative fluid dynamics simulations of a trapped two-dimensional Fermi gas at unitarity using a Lattice Boltzmann algorithm. We are able to simulate non-harmonic trapping potentials, temperature-dependent viscosities as well as a discretized version of the ballistic (non-interacting) behavior. Our approach lends itself to direct comparison with experimental data, opening up the possibility of a precision determination of transport coefficients in the unitary Fermi gas. Furthermore, we predict the presence of a non-hydrodynamic component in the quadrupole mode, which should be observable experimentally.
16 pages, 10 figures
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- Model-independent determination of the shear viscosity of a trapped unitary Fermi gas: Application to high temperature data
- Determination of the density and temperature dependence of the shear viscosity of a unitary Fermi gas based on hydrodynamic flow
- String-Theory-Based Predictions for Nonhydrodynamic Collective Modes in Strongly Interacting Fermi Gases
- Higher-Harmonic Collective Modes in a Trapped Gas from Second-Order Hydrodynamics
- A generalized Theory of Diffusion based on Kinetic Theory
- Short-lived lattice quasiparticles for strongly interacting fluids
- Two Dimensional Turbulence in a Massless Fluid with a Relativistic Lattice Boltzmann Model
- Strongly Interacting Fermi Gases: Hydrodynamics and Beyond