Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2007-03-14
Solid State Communications 141, 563 (2007)
Physics
Condensed Matter
Strongly Correlated Electrons
19 Pages
Scientific paper
10.1016/j.ssc.2006.12.018
We present a theory of the pair distribution function $g(z)$ and many-body effective electron-electron interaction for one dimensional (1D) electron liquid. Our approach involves the solution of a zero-energy scattering Schr\"odinger equation for $\sqrt{g(z)}$ where we implemented the Fermi hypernetted-chain approximation including the elementary diagrams corrections. We present numerical results for $g(z)$ and the static structure factor $S(k)$ and obtain good agreement with data from diffusion Monte Carlo studies of the 1D system. We calculate the correlation energy and charge excitation spectrum over an extensive range of electron density. Furthermore, we obtain the static correlations in good qualitative agreement with those calculated for the Luttinger liquid model with long-range interactions.
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