TY - JOUR
T1 - Effect of electron-electron interactions on the average polarizability of a mesoscopic system
AU - Berkovits, Richard
PY - 1996
Y1 - 1996
N2 - A comparison between an analytical calculation of the polarizability of a mesoscopic interacting system in the random-phase approximation and numerical exact diagonalization results is presented. While for weak interactions the analytical calculation fits the numerical results rather well, deviations appear for stronger interactions. This is the result of the appearance of intermediate-range correlations in the electron density, which suppresses the polarizability below its classical value. The relevance to quantum-dot systems is discussed.
AB - A comparison between an analytical calculation of the polarizability of a mesoscopic interacting system in the random-phase approximation and numerical exact diagonalization results is presented. While for weak interactions the analytical calculation fits the numerical results rather well, deviations appear for stronger interactions. This is the result of the appearance of intermediate-range correlations in the electron density, which suppresses the polarizability below its classical value. The relevance to quantum-dot systems is discussed.
UR - http://www.scopus.com/inward/record.url?scp=0342391566&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.54.10324
DO - 10.1103/PhysRevB.54.10324
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AN - SCOPUS:0342391566
SN - 1098-0121
VL - 54
SP - 10324
EP - 10327
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 15
ER -