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- W2020009574 abstract "We exploit the exact solution for the ground state of the one-dimensional spinless quantum gas of fermions with $ensuremath{mu}{/x}_{mathrm{ij}}^{2}$ interaction. The available analytical pair densities for $ensuremath{mu}=ensuremath{-}1/4,$ 0, and 2 allow us to analyze particle-number fluctuations. They are suppressed by repulsive interaction $(ensuremath{mu}>0),$ enhanced by attraction $(ensuremath{mu}<0),$ and measure the kind and strength of correlation. Other recently proposed purely quantum-kinematical measures of the correlation strength arise from the small-separation behavior of the pair density or---for fermions---from the nonidempotency of the momentum distribution and its large-momenta behavior. They are compared with each other and with reference-free, short-range correlation-measuring ratios of the kinetic and potential energies." @default.
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- W2020009574 date "2000-12-15" @default.
- W2020009574 modified "2023-09-27" @default.
- W2020009574 title "Fluctuation-correlation analysis of the Calogero-Sutherland model" @default.
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- W2020009574 doi "https://doi.org/10.1103/physrevb.62.15279" @default.
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