|
| related topics |
| {time, systems, information} |
| {bell, inequality, local} |
| {measurement, state, measurements} |
| {particle, mechanics, theory} |
| {qubit, qubits, gate} |
|
Quantum measurement breaks Lorentz symmetry
Ian C. Percival
abstract: Traditionally causes come before effects, but according to modern physics
things aren't that simple. Special relativity shows that `before' and `after'
are relative, and quantum measurement is even more subtle. Since the
nonlocality of Bell's theorem, it has been known that quantum measurement has
an uneasy relation with special relativity, described by Shimony as `peaceful
coexistence'. Hardy's theorem says that quantum measurement requires a
preferred Lorentz frame. The original proofs of the theorem depended on there
being no backward causality, even at the quantum level. In quant-ph/9803044
this condition was removed. It was only required that systems with classical
inputs and outputs had no causal loops. Here the conditions are weakened
further: there should be no forbidden causal loops as defined in the text. The
theory depends on a transfer function analysis, which is introduced in detail
before application to specific systems.
- oai_identifier:
- oai:arXiv.org:quant-ph/9906005
- categories:
- quant-ph gr-qc
- comments:
- 48 pages, 18 figures, mostly at the end. LaTeX
- arxiv_id:
- quant-ph/9906005
- report_no:
- QMW-TH-99-07
- created:
- 1999-06-01
- updated:
- 1999-06-02
Full article ▸
|
|
| related documents |
| 0111025v2 |
| 9703022v1 |
| 0301002v1 |
| 0306023v1 |
| 0506266v2 |
| 0402197v6 |
| 0101088v1 |
| 0101060v1 |
| 0210190v1 |
| 0512115v4 |
| 0611250v1 |
| 0206089v2 |
| 0512202v1 |
| 9912020v1 |
| 9909082v1 |
| 0203020v1 |
| 0602221v1 |
| 0012003v5 |
| 0211085v2 |
| 9908074v5 |
| 0207144v1 |
| 0506270v2 |
| 0010081v1 |
| 0212053v1 |
| 0608248v2 |
|