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Cluster expansion for two-dimensional electron liquids
Author(s) -
Hiroo Totsuji
Publication year - 1979
Publication title -
physical review. a, general physics
Language(s) - English
Resource type - Journals
ISSN - 0556-2791
DOI - 10.1103/physreva.19.889
Subject(s) - physics , cluster expansion , order (exchange) , cluster (spacecraft) , energy (signal processing) , electron , correlation function (quantum field theory) , domain (mathematical analysis) , debye , debye function , atomic physics , condensed matter physics , debye length , quantum mechanics , mathematical analysis , mathematics , finance , computer science , dielectric , economics , programming language
The pair correlation function and the correlation energy density of two-dimensional electron liquids are calculated on the basis of the Salpeter's Debye-chain type expansion. When the two-dimensional plasma parameter (£=2πne4T-2)is small, the expansion to the first order gives the correlation energy to the order of (£21n£). It is shown that experimental results in the domain (£<0.5) can be reproduced by taking into account the first and the second order terms in this expansion.

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