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cond-mat.str-el2000★ 8 cited
A variational perturbation scheme for many-particle systems in the functional integral approach
Sang Koo You, Chul Koo Kim, Kyun Nahm +1
A variational Perturbation theory based on the functional integral approach is formulated for many-particle systems. Using the variational action obtained through Jensen-Peierls' i…
cond-mat.str-el1997
Finite temperature many-particle theory of condensed matter systems in the functional Schroedinger picture
Hyun Sik Noh, Sang Koo You, Chul Koo Kim
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,…