36 citations · 181 across the 16 of their papers we have counts for
5 papers · 1 filter
Källen-Lehman Representation and the Gluon Propagator
Marco Frasca
We exploit the Kallen-Lehman representation of the two-point Green function to prove that the gluon propagator cannot go to zero in the infrared limit. We are able to derive also t…
Spectrum of Yang-Mills Theory in D=3+1
Marco Frasca
We give a comparison of the spectrum of Yang-Mills theory in , recently derived with a strong coupling expansion, with lattice data. We verify excellent agreement also for 2…
Green functions and nonlinear systems: Short time expansion
Marco Frasca
We show that Green function methods can be straightforwardly applied to nonlinear equations appearing as the leading order of a short time expansion. Higher order corrections can b…
Spectrum in the broken phase of a theory
Marco Frasca
We derive the spectrum in the broken phase of a theory, in the limit , showing that this goes as even integers of a renormalized mass in agreement with recent la…
Green Function Method for Nonlinear Systems
Marco Frasca
We show that a Green function solution can be given for a class of non-homogeneous nonlinear systems having relevance in quantum field theory. This in turn means that a quantum fie…