Confined Quantum Time of Arrival for Vanishing Potential

Details Confined Quantum Time of Arrival for Vanishing Potential Confined Quantum Time of Arrival for Vanishing Potential

2005-12-13

arxiv.org/abs/quant-ph/0512096v1

Physics

Quantum Physics

accepted for publication in Phys. Rev. A

Scientific paper

10.1103/PhysRevA.72.062107

We give full account of our recent report in [E.A. Galapon, R. Caballar, R. Bahague {\it Phys. Rev. Let.} {\bf 93} 180406 (2004)] where it is shown that formulating the free quantum time of arrival problem in a segment of the real line suggests rephrasing the quantum time of arrival problem to finding a complete set of states that evolve to unitarily arrive at a given point at a definite time. For a spatially confined particle, here it is shown explicitly that the problem admits a solution in the form of an eigenvalue problem of a class of compact and self-adjoint time of arrival operators derived by a quantization of the classical time of arrival. The eigenfunctions of these operators are numerically demonstrated to unitarilly arrive at the origin at their respective eigenvalues.

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