Hartree shift in unitary Fermi gases
classification
❄️ cond-mat.quant-gas
cond-mat.str-elquant-ph
keywords
hartreeshiftenergyfermiunitaryagreementallowsamplitude
read the original abstract
The Hartree energy shift is calculated for a unitary Fermi gas. By including the momentum dependence of the scattering amplitude explicitly, the Hartree energy shift remains finite even at unitarity. Extending the theory also for spin-imbalanced systems allows calculation of polaron properties. The results are in good agreement with more involved theories and experiments.
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