Journal
EUROPHYSICS LETTERS
Volume 50, Issue 4, Pages 447-453Publisher
E D P SCIENCES
DOI: 10.1209/epl/i2000-00290-6
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We study the screening of the Coulomb interaction in non-polar systems by polarizable atoms. We show that in low dimensions and small finite-size systems this screening deviates strongly from that conventionally assumed. In fact in one dimension the short-range interaction is strongly screened and the long-range interaction is anti-screened thereby strongly reducing the gradient of the Coulomb interaction and therefore the correlation effects. We argue that this effect explains the success of mean-field single-particle theories for large molecules.
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