Compressibility sum rule for the two-dimensional electron gas

被引：0
|
作者：
Das, MP [1 ]
Golden, KI
Green, F
机构：
[1] Australian Natl Univ, Res Sch Phys Sci & Engn, Dept Theoret Phys, Canberra, ACT 0200, Australia
[2] Univ Vermont, Dept Math & Stat, Burlington, VT 05405 USA
[3] Univ Vermont, Dept Phys, Burlington, VT 05405 USA
[4] Univ New S Wales, Sch Phys, Ctr Quantum Computat Technol, Sydney, NSW 2052, Australia
来源：
PHYSICAL REVIEW E | 2001年 / 64卷 / 01期
关键词：
D O I：
暂无
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The authors establish formulas for the isothermal compressibility and long-wavelength static density-density response function of a weakly correlated two-dimensional electron gas in the 1<<beta epsilon (F)<<infinity> and 0 less than or equal to beta epsilon (F)<<1 degeneracy domains; beta epsilon (F) = pin (h) over bar (2)/(mk(B)T). The calculation of the pressure in the former domain is based on the Isihara-Toyoda formula [A. Isihara and T. Toyoda, Phys. Rev. B 21, 3358 (1980)] for the exchange-correlation energy at finite temperature. The pressure calculation in the latter domain is based on the Totsuji classical cluster-expansion formula for the correlation energy [H. Totsuji, J. Phys. Sec. Jpn. 40, 857 (1976); Phys. Rev. A 19, 889 (1979)].
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