Lindhard function of a d-dimensional Fermi gas
classification
❄️ cond-mat.quant-gas
cond-mat.str-elmath-phmath.MP
keywords
functionresponsefermifermionsapproximationbaselineclosedcorrelations
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We review in detail the derivation of the dielectric response function of a noninteracting system of spin-1/2 fermions in the random-phase approximation. Results for the response function of a Fermi gas in one, two and three dimensions can be obtained in closed form, and represent the baseline for developing a pedagogical understanding of the effect of correlations on the response functions in interacting systems of fermions.
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Cited by 1 Pith paper
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Unconventional plasmon dynamics due to strong correlations in Sr$_2$RuO$_4$
Strong electron correlations in Sr2RuO4 produce unconventional plasmon dispersion, intrinsic width below the electron-hole continuum, and a high-energy peak from incoherent transitions.
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