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| related topics |
| {particle, mechanics, theory} |
| {measurement, state, measurements} |
| {cos, sin, state} |
| {alice, bob, state} |
| {time, systems, information} |
| {error, code, errors} |
| {operator, operators, space} |
| {time, decoherence, evolution} |
| {bell, inequality, local} |
| {observables, space, algebra} |
|
Time-Symmetrized Counterfactuals in Quantum Theory
L. Vaidman
abstract: Recently, several authors have criticized the time-symmetrized quantum theory
originated by the work of Aharonov et al. (1964). The core of this criticism
was a proof, appearing in various forms, which showed that the counterfactual
interpretation of time-symmetrized quantum theory cannot be reconciled with
standard quantum theory. I argue here that the apparent contradiction is due to
a logical error. I analyze the concept of counterfactuals in quantum theory and
introduce time-symmetrized counterfactuals. These counterfactuals do not lead
to any contradiction with the predictions of quantum theory. I discuss
applications of time-symmetrized counterfactuals to several surprising examples
and show the usefulness of the time-symmetrized quantum formalism.
- oai_identifier:
- oai:arXiv.org:quant-ph/9807075
- categories:
- quant-ph
- comments:
- This is a preprint from July 97 and it has partial overlap with
quant-ph/9609007 and quant-ph/9802042. It is submitted now, in part because
the paper (accepted for publication) by R. Kastner, quant-ph/9806002
addresses this manuscript
- arxiv_id:
- quant-ph/9807075
- journal_ref:
- Found.Phys. 29 (1999) 755-765
- report_no:
- TAUP 2459-97
- created:
- 1998-07-27
Full article ▸
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