Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Quantum Measurement as a Stochastic Entanglement Race
Karlstad University, Faculty of Health, Science and Technology (starting 2013). Department of Physics, University of Cape Coast, Cape Coast, Ghana.
(English)Manuscript (preprint) (Other academic)
Abstract [en]

The thesis of this paper is that quantum measurement can be analyzed and understood within quantum mechanics itself. The statistics of the measurement process comes from the unknown details of the macroscopic measurement device.

Quantum measurement is analyzed within the framework of scattering theory of quantum field theory with the aim of finding a physical rather than a metaphysical understanding. The measurement interaction is treated together with the quantum process to be measured. The evaluation of a Feynman diagram for the total process leads to one factor from the measurement interaction for each channel multiplying the basic scattering amplitudes. With increasing entanglement taken into account, these factors compete for dominance. They depend on unknown details of the measurement apparatus. The statistics of this competition is studied under the assumption that the measurement interaction does not introduce any bias.

A binary quantum system is analyzed and after that the n-channel case. As a background, a couple of classical examples are shown, leading to the same selective mechanisms.

The result of this analysis is that the quantum measurement process can be understood, whether a single measurement or an ensemble of measurements, as a result of an ordinary unitary time development, based on the interaction

beteen the system subjet to measurement and the measurement apparatus.

This result makes it possible to view the quantum-mechanical state as describing reality rather than merely a potentiality. This opens again for an ontology of physics, and hence for science in general.

National Category
Physical Sciences
Research subject
Physics
Identifiers
URN: urn:nbn:se:kau:diva-33102OAI: oai:DiVA.org:kau-33102DiVA, id: diva2:731855
Available from: 2014-07-02 Created: 2014-07-02 Last updated: 2017-12-13Bibliographically approved

Open Access in DiVA

Entanglement race(9138 kB)1 downloads
File information
File name FULLTEXT01.pdfFile size 9138 kBChecksum SHA-512
2469c0e4d0b971581cd927717daabdc22cd0d6441a2c9068e9d090091d55b2b3671a8586ae2e3575474a98548b596cb769923570e1cce21ccfa01d18490409be
Type fulltextMimetype application/pdf

By organisation
Faculty of Health, Science and Technology (starting 2013)
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 1 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 31 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf