SUPERLUMINAL PROCESSES AND SIGNAL VELOCITY IN TUNNELING SIMULATION

It has been demonstrated that microwave simulation is a powerful metho d for studying tunneling processes and in particular tunneling time, A semiclassical interpretation, based on the telegrapher's equation, tu rned out to be in quite good agreement with the predictions of quantum -mechanical models but it works well also in connection with superlumi nal behaviours recently evidenced, The aim of this work is to demonstr ate how evanescent waves account for superluminal processes: the plaus ibility of the results is discussed on the basis of signal analysis al ong the lines of the Sommerfeld-Brillouin criterion, as well as in the framework of special relativity.