Path Integral Analysis of Arrival Times with a Complex Potential

Details Path Integral Analysis of Arrival Times with a Complex Potential Path Integral Analysis of Arrival Times with a Complex Potential

2008-01-28

arxiv.org/abs/0801.4308v1

Physics

Quantum Physics

8 pages

Scientific paper

10.1103/PhysRevA.77.062103

A number of approaches to the arrival time problem employ a complex potential of a simple step function type and the arrival time distribution may then be calculated using the stationary scattering wave functions. Here, it is shown that in the Zeno limit (in which the potential becomes very large), the arrival time distribution may be obtained in a clear and simple way using a path integral representation of the propagator together with the path decomposition expansion (in which the propagator is factored across a surface of constant time). This method also shows that the same result is obtained for a wide class of complex potentials.

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