Hartree-Fock-Bogoliubov theory of trapped one-dimensional imbalanced Fermi systems
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DOI: 10.1103/physreva.101.063607
Abstract: Ground-state Hartree-Fock-Bogoliubov (HFB) theory is applied to imbalanced spin-$1/2$ one-dimensional (1D) Fermi systems that are spatially confined by either a harmonic or a hard-wall trapping potential. It has been hoped that such systems, which can… read more here.
Keywords: state; fock bogoliubov; fermi systems; bogoliubov ... See more keywords
General memory kernels and further corrections to the variational path integral approach for the Bogoliubov-Fröhlich Hamiltonian
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DOI: 10.1103/physrevb.105.104304
Abstract: The celebrated variational path integral approach to the polaron problem shows remarkable discrepancies with diagrammatic Monte Carlo for the Bogoliubov-Fr¨ohlich Hamiltonian which describes an impurity weakly coupled to a Bose condensed atomic gas. It has… read more here.
Keywords: path integral; variational path; bogoliubov; approach ... See more keywords