Spin zero particle propagator from a random walk in 3-D space
arXiv:hep-th/0303028 · doi:10.1016/S0375-9601(03)00338-4
Abstract
The propagator of a spin zero particle in coordinate space is derived supposing that the particle propagates rectilinearly always at the speed of light and changes its direction in some random points due to a scattering process.The average path between two scatterings is of the order of the Compton length.
8 pages, no figure. accepted by Phys.Lett.A