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Finite temperature many-particle theory of condensed matter systems in the functional Schroedinger picture

Hyun Sik Noh·Sang Koo You·Chul Koo Kim
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Abstract

A finite temperature many-particle theory of condensed matter systems is formulated using the functional Schroedinger picture. Using the interacting electron gas as a model system, we solve the equation of motion for the density matrix variationally with a Gaussian type trial density matrix. We show that the present formalism yields the finite temperature Hartree-Fock results both for the para- and ferromagnetic states in a simple and convenient fashion. Implications of the present results and future prospects are also discussed.

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Hyun Sik Noh, Sang Koo You, Chul Koo Kim. 1997-03-11. Finite temperature many-particle theory of condensed matter systems in the functional Schroedinger picture. https://arxiv.org/abs/cond-mat/9703101

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