The Zeropoint Field: No Longer a Ghost
Keywords: Zero Point Energy
We develop a local realist analysis of parametric down conversion, based on the recognition that the pump field, instead of down converting spontaneously, does so through its nonlinear coupling with a real zeropoint, or ?vacuum? electromagnetic field. The theory leads to the prediction of a new phenomenon ? that, in addition to the main downconversion rainbow, there is a satellite rainbow, whose intensity is about 3 per cent of the main one. Confirmation of this prediction will call seriously into question the current description of the light field in terms of photons.