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Current response, structure factor and hydrodynamic quantities of a two- and three-dimensional Fermi gas from the operator product expansion
Current response structure factor
2011/7/21
We apply the operator product expansion to determine the asymptotic form of the current response of a Fermi gas in two and three dimensions.
Analytical results for the anisotropic collective flow of a Lorentz gas of massless particles scattering on fixed centres are presented.
Crossover from 2D to 3D in a weakly interacting Fermi gas
Crossover interacting Fermi gas
2010/11/18
We have studied the transition from two to three dimensions in a low temperature weakly interacting 6Li Fermi gas. Below a critical atom number, N2D, only the lowest transverse vibrational state of a ...
Mixture of Tonks-Girardeau gas and Fermi gas in one-dimensional optical lattices
Mixture of Tonks-Girardeau gas Fermi gas one-dimensional optical lattices
2010/11/25
We study the Bose-Fermi mixture with infinitely boson-boson repulsion and finite boson-Fermion
repulsion. By using a generalized Jordan-Wigner transformation, we show that the system can be
mapped t...
Gradient Catastrophe and Fermi Edge Resonances in Fermi Gas
Gradient Catastrophe Fermi Edge Resonances Fermi Gas
2010/11/19
A smooth spatial disturbance of the Fermi surface in a Fermi gas inevitably becomes sharp. This
phenomenon, called the gradient catastrophe, causes the breakdown of a Fermi sea to disconnected parts ...