A non-Gaussian variational ansatz computes 2D Fermi polaron ground-state energy, residue, and spectral functions, agreeing qualitatively with Monte Carlo while revealing oscillatory or relaxational dynamics to the molecular state.
Chevy, Phys
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Spin-imbalanced Fermi gases form a communal pairing state that correlates all fermions and is energetically favorable over FFLO, with the up-down ratio set by Fermi surface density of states ratio.
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Efficient variational approach to the Fermi polaron problem in two dimensions, both in and out of equilibrium
A non-Gaussian variational ansatz computes 2D Fermi polaron ground-state energy, residue, and spectral functions, agreeing qualitatively with Monte Carlo while revealing oscillatory or relaxational dynamics to the molecular state.
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Communal pairing in spin-imbalanced Fermi gases
Spin-imbalanced Fermi gases form a communal pairing state that correlates all fermions and is energetically favorable over FFLO, with the up-down ratio set by Fermi surface density of states ratio.