Simple Classical Mapping of the Spin-Polarized Quantum Electron Gas: Distribution Functions and Local-Field Corrections

M. W. C. Dharma-wardana and F. Perrot
Phys. Rev. Lett. 84, 959 – Published 31 January 2000
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Abstract

We use the now well known spin unpolarized exchange-correlation energy Exc of the uniform electron gas as the basic “many-body” input to determine the temperature Tq 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 Tq, obtained using the hypernetted chain 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 beyond QMC simulations. Results are presented for the SPDFs and the local-field corrections to the response functions of the electron fluid at T=0 and finite T.

  • Received 30 June 1999

DOI:https://doi.org/10.1103/PhysRevLett.84.959

©2000 American Physical Society

Authors & Affiliations

M. W. C. Dharma-wardana* and F. Perrot

  • National Research Council, Ottawa, Canada K1A 0R6
  • and Centre d'Etudes de Bruyères le Châtel, P.O. Box 12, 91689 Bruyères le Châtel, France

  • *Electronic address: chandre@cm1.phy.nrc.ca

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Vol. 84, Iss. 5 — 31 January 2000

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