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| Content Provider | Springer Nature Link |
|---|---|
| Author | Stoica, Ovidiu Cristinel |
| Copyright Year | 2015 |
| Abstract | Quantum measurement finds the observed system in a collapsed state, rather than in the state predicted by the Schrödinger equation. Yet there is a relatively spread opinion that the wavefunction collapse can be explained by unitary evolution (for instance in the decoherence approach, if we take into account the environment). In this article it is proven a mathematical result which severely restricts the initial conditions for which measurements have definite outcomes, if pure unitary evolution is assumed. This no-go theorem remains true even if we take the environment into account. The result does not forbid a unitary description of the measurement process, it only shows that such a description is possible only for very restricted initial conditions. The existence of such restrictions of the initial conditions can be understood in the four-dimensional block universe perspective, as a requirement of global self-consistency of the solutions of the Schrödinger equation. |
| Starting Page | 1897 |
| Ending Page | 1911 |
| Page Count | 15 |
| File Format | |
| ISSN | 00207748 |
| Journal | International Journal of Theoretical Physics |
| Volume Number | 55 |
| Issue Number | 3 |
| e-ISSN | 15729575 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2015-10-14 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Foundations of quantum mechanics Measurement theory Contextuality Entanglement and quantum nonlocality EPR paradox Bell inequalities Quantum mechanics Physics Quantum Physics Elementary Particles, Quantum Field Theory Theoretical, Mathematical and Computational Physics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy Mathematics |
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