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- W2037513426 abstract "The average-density approximation is used to construct a nonlocal kinetic energy functional for an inhomogeneous two-dimensional Fermi gas. This functional is then used to formulate a Thomas-Fermi-von Weizsacker-like theory for the description of the ground-state properties of the system. The quality of the kinetic energy functional is tested by performing a fully self-consistent calculation for an ideal, harmonically confined, two-dimensional system. Good agreement with exact results are found, with the number and kinetic energy densities exhibiting oscillatory structure associated with the nonlocality of the energy functional. Most importantly, this functional shows a marked improvement over the two-dimensional Thomas-Fermi von Weizsacker theory, particularly in the vicinity of the classically forbidden region." @default.
- W2037513426 created "2016-06-24" @default.
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- W2037513426 date "2014-02-03" @default.
- W2037513426 modified "2023-09-24" @default.
- W2037513426 title "Nonlocal kinetic energy functional for an inhomogeneous two-dimensional Fermi gas" @default.
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- W2037513426 doi "https://doi.org/10.1103/physreva.89.022503" @default.
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