LOCV calculation for the uniform electron fluid at finite temperature |
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| Authors: | M Modarres HR Moshfegh A Sepahvand |
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| Institution: | (1) Physics Department, Tehran University, 14394 Tehran Iran, IR;(2) Center for Theoretical Physics and Mathematics, AEOI, PO Box 11365-8486, Tehran, Iran, IR;(3) (IPM) Institute for Studies in Theoretical Physics and Mathematics, Tehran, Iran, IR |
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| Abstract: | The free energy of the homogeneous electron fluid at finite temperature is obtained using the lowest order constrained variational
(LOCV) method. In order to test the convergence of cluster expansion series the three-body cluster terms are calculated with
the LOCV correlation functions. The results agree reasonably with those of Monte Carlo, coupled-cluster, perturbational expansion
etc, techniques at zero temperature. The flashing and critical temperatures as well as the critical exponent are found to
be about 0.6, 1.3 eV and 0.384 respectively. A similar liquid-gas phase transition to that of nuclear matter and liquid He3 is observed.
Received 15 April 2002 / Received in final form 19 October 2002 Published online 4 February 2003
RID="a"
ID="a"e-mail: modarres@khayam.ut.ac.ir |
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| Keywords: | PACS 64 70 Fx Liquid-vapor transitions – 71 10 -w Theories and models of many-electron systems – 71 10 Ca Electron gas Fermi gas – 64 60 Fr Equilibrium properties near critical points critical exponents |
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