J.Feldman , J.Magnen , V.Rivasseau , E.Trubowitz 
An Infinite Volume Expansion for Many Fermion 
Green's Functions
(116K, TeX)

ABSTRACT.  We prove the convergence of a simplified cluster/Mayer expansion at
one energy scale for three space-time dimensional many Fermion
systems. The bounds are uniform in the scale. We iterate them
to show that the sum of all diagrams that contain no
two or four-legged subdiagrams converges.
Our results are suited
to a multiscale construction of the full system.