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cond-mat.str-el1999
Self-consistent treatment of dynamical correlation functions using a spectral representation technique
M. Letz, F. Marsiglio
A system of equations resulting from an approximation of the equation of motion of Green functions for correlated electron systems is usually solved using Matsubara technique. In t…
cond-mat.str-el1999
Crossover from BCS superconductivity to BEC of pairs: The role of the lifetime of the pairs
M. Letz
The understanding of an electron gas with short coherence length pairs formed by an attractive interaction is believed to be one of the major keys to our theoretical knowledge of t…