138 citations · 1.1k across the 25 of their papers we have counts for
5 papers · 1 filter
Time as an Observable
J. Oppenheim, B. Reznik, W. G. Unruh
The role of time in quantum mechanics is discussed. The differences between ordinary observables and an observable which corresponds to the time of an event is examined. In particu…
Time-of-Arrival States
J. Oppenheim, B. Reznik, W. G. Unruh
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…
When does a Measurement or Event Occur
J. Oppenheim, B. Reznik, W. G. Unruh
Within quantum mechanics it is possible to assign a probability to the chance that a measurement has been made at a specific time t. However, the interpretation of such a probabili…
Quantum limitations on superluminal propagation
Yakir Aharonov, Benni Reznik, Ady Stern
Unstable systems such as media with inverted atomic population have been shown to allow the propagation of analytic wavepackets with group velocity faster than that of light, witho…
Unruh effect with back reaction--A first quantized treatment
B. Reznik
We present a first-quantized treatment of the back reaction on an accelerated particle detector. The accelerated detector is described as a first quantized, charged, pointlike part…