Strongly coupled quantum field theory

  title={Strongly coupled quantum field theory},
  author={Marco Frasca},
  journal={Physical Review D},
  • M. Frasca
  • Published 6 November 2005
  • Physics, Mathematics
  • Physical Review D
I analyze numerically a two-dimensional {lambda}{phi}{sup 4} theory showing that in the limit of a strong coupling {lambda}{yields}{infinity} just the homogeneous solutions for time evolution are relevant in agreement with the duality principle in perturbation theory as presented in [M. Frasca, Phys. Rev. A 58, 3439 (1998)], being negligible the contribution of the spatial varying parts of the dynamical equations. A consequence is that the Green function method works for this nonlinear problem… 

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