Physics – Quantum Physics
Scientific paper
1999-04-13
Phys.Rev.A61:022118,2000
Physics
Quantum Physics
4 pages, revtex, 2 eps figures included
Scientific paper
10.1103/PhysRevA.61.022118
A realization of the concept of "crossing state" invoked, but not implemented, by Wigner, allows to advance in two important aspects of the time of arrival in quantum mechanics: (i) For free motion, we find that the limitations described by Aharonov et al. in Phys. Rev. A 57, 4130 (1998) for the time-of-arrival uncertainty at low energies for certain mesurement models are in fact already present in the intrinsic time-of-arrival distribution of Kijowski; (ii) We have also found a covariant generalization of this distribution for arbitrary potentials and positions.
Baute A. D.
Egusquiza Inigo L.
Mayato Rafael Sala
Muga Gonzalo J.
Palao Jose P.
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