Joel Feldman, Manfred Salmhofer, Eugene Trubowitz
Regularity of the moving Fermi surface: the exact selfenergy
(76K, plain TeX with postscript figures)

ABSTRACT.  Regularity of the deformation of the Fermi surface under short-range
interactions is established to all orders in perturbation theory.
The proofs are based on a new classification of all graphs that 
are not doubly overlapping. They turn out to be generalized 
RPA graphs. This provides a simple extension to all orders of the 
regularity theorem of the Fermi surface movement proven in [FST2]. 
Models in which S is not symmetric under the reflection 
p to -p are included.