On time and space in potential barriers

The energy of a wave packet tunneling a barrier is negative and its wavenumber is imaginary. What happens with time and locality? Several studies have been published resulting in a real time.However, previous theories and recent experiments revealed that the time spent inside abarrierhas no finite value but is zero. A“zero time” observation was found in different experiments and fields. In 1953Brillouin conjectured that wave mechanics holds for all fields including elastic, electromagnetic and Schrödinger waves and possibly other areas such as neuroscience.Our report addressesboth, time andspace.