Electronic Excess Energy in Modulated Positive-Background Model

1982 ◽  
Vol 21 ◽  
Author(s):  
H. Yahauchi
Keyword(s):  
Ground State Energy ◽  
Ground State ◽  
State Energy ◽  
Electron Gas ◽  
Alloy System ◽  
Excess Energy ◽  
Absolute Zero ◽  
Background Model ◽  
Zero Temperature ◽  
Modulation Wavelength

ABSTRACTElectronic excess energy of a composition-modulated alloy system at absolute zero temperature is obtained using Hohenberg and Kohn's formula (for the ground-state energy of an inhomogeneous electron gas) in a modulated positive-background model. Dependence of the electronic excess energy on the modulation wavelength is studied. Two leading terms in the excess energy are examined to elucidate the limitation of this model.

A Parametric Approach to the Ground-State Energy of an Electron Gas

1968 ◽  
Vol 175 (1) ◽  
pp. 224-228 ◽  
Author(s):  
M. S. Becker ◽  
A. A. Broyles ◽  
Tucson Dunn
Keyword(s):  
Ground State Energy ◽  
Ground State ◽  
State Energy ◽  
Electron Gas ◽  
Parametric Approach

GROUND-STATE FLUCTUATIONS IN RUNG-DIMERIZED SPIN LADDERS

2011 ◽  
Vol 25 (09) ◽  
pp. 1293-1300 ◽  
Author(s):  
P. N. BIBIKOV
Keyword(s):  
Ground State Energy ◽  
Ground State ◽  
State Energy ◽  
Reference Model ◽  
Quantum Fluctuations ◽  
Numerical Calculations ◽  
Spin Ladder ◽  
Zero Temperature ◽  
Analytic Expressions ◽  
Parameter Density

Treating an exactly rung-dimerized spin ladder as a reference model we study perturbatively zero temperature quantum fluctuations in spin ladders with slightly destroyed rung-dimerization. Analytic expressions are obtained for the gas parameter (density of rung-triplets) and the ground-state energy per rung. At a strong diagonal frustration as well as at a rather strong antiferromagnetic rung coupling these results well agree with the previous numerical calculations.

Ground-State Energy of a High-Density Electron Gas

1964 ◽  
Vol 133 (2A) ◽  
pp. A371-A374 ◽  
Author(s):  
W. J. Carr ◽  
A. A. Maradudin
Keyword(s):  
Ground State Energy ◽  
Ground State ◽  
State Energy ◽  
Electron Gas ◽  
High Density
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