Abstract
We rederive the Coulomb expansion of the electron gas average energy at finite temperature, starting from scratch, i.e., using only the framework of the grand canonical ensemble and not the finite-T Green's function formalism. We recover the analytical expressions of the exchange and correlation energy in both the high-T and theT=0 limits. We explicitly show the origin of the crossover of the correlation energy leading term frome 4 lne 2 at zero temperature toe 3 at finiteT. We also discuss the relative importance of exchange and correlation in both limits.
Similar content being viewed by others
References
M. Gell-Mann and K. A. Brueckner,Phys. Rev. 106:364 (1957).
J. Hubbard,Proc. Soc. Lond. A 243:336 (1957).
A. L. Fetter and J. D. Walecka,Quantum Theory of Many-Particle Systems (McGraw-Hill, New York, 1971).
G. D. Mahan,Many-Particle Physics (Plenum Press, New York, 1981).
D. M. Ceperley,Phys. Rev. B 18:3126 (1978); D. M. Ceperley and B. J. Alder.Phys. Rev. Lett. 45:566 (1980).
A. A. Abrikosov, L. P. Gorkov, and I. E. Dzyaloshinski,Methods of Quantum Field Theory in Statistical Physics (Prentice-Hall, Englewood Cliffs, New Jersey, 1963).
H. E. De Witt,J. Math. Phys. 3:1216 (1962).
M. W. C. Dharma-Wardana and R. Taylor,J. Phys. C 14:629 (1981).
F. Perrot and M. W. C. Dharma-Wardana,Phys. Rev. A 30:2619 (1984).
S. Tanaka, S. Mitake, and S. Ichimaru,Phys. Rev. A 32:2619 (1985).
R. G. Dandrea, N. M. Ashcroft, and A. E. Carlsson,Phys. Rev. B 34:2097 (1986).
L. D. Landau and E. M. Lifchitz,Statistical Physics (Pergamon Press, London, 1959), Chapter V.
B. Diu, C. Guthmann, D. Lederer, and B. Roulet,Physique Statistique (Hermann, Paris, 1989), Chapter V.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Betbeder-Matibet, O., Combescot, M. On the Coulomb energy of a finite-temperature electron gas. J Stat Phys 75, 953–969 (1994). https://doi.org/10.1007/BF02186752
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02186752