9807043v1

related topics
{time, wave, function}
{operator, operators, space}
{particle, mechanics, theory}
{equation, function, exp}
{states, state, optimal}
{measurement, state, measurements}
{time, systems, information}
{energy, gaussian, time}
{state, states, coherent}
{alice, bob, state}

Time-of-Arrival States

J. Oppenheim, B. Reznik, W. G. Unruh

abstract: Although one can show formally that a time-of-arrival operator cannot exist, one can modify the low momentum behaviour of the operator slightly so that it is self-adjoint. We show that such a modification results in the difficulty that the eigenstates are drastically altered. In an eigenstate of the modified time-of-arrival operator, the particle, at the predicted time-of-arrival, is found far away from the point of arrival with probability 1/2.

oai_identifier:
oai:arXiv.org:quant-ph/9807043
categories:
quant-ph gr-qc
comments:
15 pages, 2 figures
doi:
10.1103/PhysRevA.59.1804
arxiv_id:
quant-ph/9807043
journal_ref:
Phys.Rev. A59 (1999) 1804
created:
1998-07-17

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