Fractional quantum field theory, path integral, and stochastic differential equation for strongly interacting many-particle systems

Abstract

While free and weakly interacting particles are described by a second-quantized nonlinear Schrödinger field, or relativistic versions of it, the fields of strongly interacting particles are governed by effective actions, whose quadratic terms are extremized by fractional wave equations. Their particle orbits perform universal Lévy walks rather than Gaussian random walks with perturbations.