On Formalisms and Interpretations
One of the reasons for the heated debates around the interpretations of quantum theory is a simple confusion between the notions of formalism $\textit{versus}$ interpretation. In this note, we make a clear distinction between them and show that there are actually two $\textit{inequivalent}$ quantum...
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Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften
2018-10-01
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| Series: | Quantum |
| Online Access: | https://quantum-journal.org/papers/q-2018-10-15-99/pdf/ |
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doaj-f6781b941e4244f88c2aacb9355e99b32020-11-24T21:24:23ZengVerein zur Förderung des Open Access Publizierens in den QuantenwissenschaftenQuantum2521-327X2018-10-0129910.22331/q-2018-10-15-9910.22331/q-2018-10-15-99On Formalisms and InterpretationsVeronika BaumannStefan WolfOne of the reasons for the heated debates around the interpretations of quantum theory is a simple confusion between the notions of formalism $\textit{versus}$ interpretation. In this note, we make a clear distinction between them and show that there are actually two $\textit{inequivalent}$ quantum formalisms, namely the relative-state formalism and the standard formalism with the Born and measurement-update rules. We further propose a different probability rule for the relative-state formalism and discuss how Wigner's-friend-type experiments could show the inequivalence with the standard formalism. The feasibility in principle of such experiments, however, remains an open question.https://quantum-journal.org/papers/q-2018-10-15-99/pdf/ |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Veronika Baumann Stefan Wolf |
| spellingShingle |
Veronika Baumann Stefan Wolf On Formalisms and Interpretations Quantum |
| author_facet |
Veronika Baumann Stefan Wolf |
| author_sort |
Veronika Baumann |
| title |
On Formalisms and Interpretations |
| title_short |
On Formalisms and Interpretations |
| title_full |
On Formalisms and Interpretations |
| title_fullStr |
On Formalisms and Interpretations |
| title_full_unstemmed |
On Formalisms and Interpretations |
| title_sort |
on formalisms and interpretations |
| publisher |
Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften |
| series |
Quantum |
| issn |
2521-327X |
| publishDate |
2018-10-01 |
| description |
One of the reasons for the heated debates around the interpretations of quantum theory is a simple confusion between the notions of formalism $\textit{versus}$ interpretation. In this note, we make a clear distinction between them and show that there are actually two $\textit{inequivalent}$ quantum formalisms, namely the relative-state formalism and the standard formalism with the Born and measurement-update rules. We further propose a different probability rule for the relative-state formalism and discuss how Wigner's-friend-type experiments could show the inequivalence with the standard formalism. The feasibility in principle of such experiments, however, remains an open question. |
| url |
https://quantum-journal.org/papers/q-2018-10-15-99/pdf/ |
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AT veronikabaumann onformalismsandinterpretations AT stefanwolf onformalismsandinterpretations |
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