In one minute

Grössing, Fussy, Mesa Pascasio and Schwabl propose a classical explanation of interference in the double slit experiment. Each particle carries a thermal context that reflects the boundary conditions of the whole experimental arrangement. They introduce a path excitation field, derived from the thermodynamics of the zero-point vacuum, that represents every path a particle can take through thermal fluctuations. From classical physics alone they derive the exact intensity pattern on the screen, along with the trajectories and the probability current. The trajectories never cross the central line between the slits, matching Bohmian mechanics without needing the quantum potential. The authors present this as showing how a quantum can be understood as an emergent system arising from an oscillator and its thermal environment.

An explanation of interference effects in the double slit experiment: Classical trajectories plus ballistic diffusion caused by zero-point fluctuations