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hep-th2005
New tests and applications of the worldline path integral in the first order formalism
C. D. Fosco, J. Sanchez-Guillen, R. A. Vazquez
We present different non-perturbative calculations within the context of Migdal's representation for the propagator and effective action of quantum particles. We first calculate th…
hep-th2005
Quantum effective actions from nonperturbative worldline dynamics
H. Gies, J. Sánchez--Guillén, R. A. Vázquez
We demonstrate the feasibility of a nonperturbative analysis of quantum field theory in the worldline formalism with the help of an efficient numerical algorithm. In particular, we…