All-order uniform momentum bounds for the massless phi^4 theory in four   dimensional Euclidean space
  A panoramic overview is given, of a theorem [1] establishing physical and uniform bounds on the Fourier-transformed Schwinger functions of a massless phi^4 theory in four Euclidean dimensions, at any loop order in perturbation theory. 
Riccardo Guida, Christoph Kopper
math-ph hep-th math.MP