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We show that the vacuum permeability and permittivity may originate from themagnetization and the polarization of continuously appearing and disappearingfermion pairs. We then show that if we simply model the propagation of thephoton in vacuum as a series of transient captures within these ephemeralpairs, we can derive a finite photon velocity. Requiring that this velocity isequal to the speed of light constrains our model of vacuum. Within thisapproach, the propagation of a photon is a statistical process at scales muchlarger than the Planck scale. Therefore we expect its time of flight tofluctuate. We propose an experimental test of this prediction.

the european physical journal. d, atomic, molecular and optical physics/the european physical journal. d, atomic, molecular, optical and plasma physics

The quantum vacuum as the origin of the speed of light