2010 (English)In: PHYSICA SCRIPTA , 2010, Vol. T140, 014001- p.Conference paper (Other academic)
We discuss the practice of quantum theory as a mechanism to obtain probabilistic predictions only. Deciding on which physical entity to measure, we can only derive predictions for the statistics of lists of recorded observations. The state vector carries information about preparation determining the state of every member of the corresponding ensemble. If we accept this as the only product of the formalism, we can draw no definite conclusions about the reality entailing the use of such a state vector. When observed outcomes relate to combined quantum systems, the probabilistic character of the theory offers what has been interpreted as a specific quantum nonlocality. It is argued that this conclusion is unwarranted. A strict adherence to the Copenhagen view makes the nonlocality emerge from the character of knowledge as probabilistic only. Such a knowledge will condition measurements independently of where and when the knowledge is acquired. There exists a primary probability, as a basic trait of nature itself, that has nothing to do with the observer's knowledge or ignorance. Hermann Weyl on Quantum Theory
Place, publisher, year, edition, pages
2010. Vol. T140, 014001- p.
, Physica scripta, ISSN 0281-1847
IdentifiersURN: urn:nbn:se:kth:diva-27663DOI: 10.1088/0031-8949/2010/T140/014001ISI: 000284693600003ScopusID: 2-s2.0-78650907843OAI: oai:DiVA.org:kth-27663DiVA: diva2:381236
16th Central European Workshop on Quantum Optics
QC 201012232010-12-252010-12-202010-12-25Bibliographically approved