The quantum traversal time tOmega is obtained as a matrix element of the classical functional in Feynman path-integral technique. The properties of tOmega and its relation to the observables in scattering experiments are investigated. The general expression for the tunneling time is found in the one-dimensional case. Various traversal times of previous works are shown to be simply related to tOmega as RetOmega , ImtOmega , or mod tOmega mod . Other possible constructions of time parameters describing the motion of a quantum particle are discussed.
 

Physical Review A, 36 4604-11, 1987.