Comparing the Mori formalism and the green function methods

AUTOR(ES)

Pires, A.S.T., Gouvêa, M.E.

FONTE

Brazilian Journal of Physics

DATA DE PUBLICAÇÃO

2004-09

RESUMO

Using a simple model described by a Hamiltonian of fermions coupled to bosons, we show that the relaxation function calculated via a low temperature approximation to the Mori memory function is similar, at least to lowest order, to the relaxation function calculated using a Green function formalism.

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