Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
1999-09-03
Physics
Condensed Matter
Strongly Correlated Electrons
4 pags (Revtex), 3 posscript figures
Scientific paper
10.1103/PhysRevLett.84.959
We use the now well known spin-unpolarized exchange-correlation energy E_{xc} of the uniform electron gas as the basic ``many-body'' input to determine the temperature T_q of a classical Coulomb fluid having the same correlation energy as the quantum system. It is shown that the spin-polarized pair distribution functions (SPDFs) of the classical fluid at T_q, obtained using the hyper-netted chain (HNC) equation are in excellent agreement with those of the T=0 quantum fluid obtained by quantum Monte Carlo (QMC) simulations. These methods are computationally simple and easily applied to problems which are currently outside the scope of QMC. Results are presented for the SPDFs and the local-field corrections to the response functions of the electron fluid at zero and finite temperatures.
Dharma-wardana M. W. C.
Perrot François
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