Finite temperature many-particle theory of condensed matter systems in the functional Schrödinger picture
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چکیده
A finite temperature many-particle theory of condensed matter systems is formulated using the functional Schrödinger 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 paraand ferromagnetic states in a simple and convenient fashion. Implications of the present results and future prospects are also discussed. PACS numbers : 71.10.+x,74.20.Fg,75.40.Cx Typeset using REVTEX e-mail: [email protected] 1
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تاریخ انتشار 1997