Abstract
Several proposals for a time-of-arrival distribution of ensembles of independent quantum particles subject to an external interaction potential are compared making use of the “crossing state” concept. It is shown that only one of them has the properties expected for a classical distribution in the classical limit. The comparison is illustrated numerically with a collision of a Gaussian wave packet with an opaque square barrier.
- Received 1 February 2001
DOI:https://doi.org/10.1103/PhysRevA.64.012501
©2001 American Physical Society