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Local causality in quantum mechanics: The essential assumptions of Bell's theorem under scrutiny

Applicant Grasshoff Gerd
Number 129730
Funding scheme Project funding (Div. I-III)
Research institution Institut für Philosophie Universität Bern
Institution of higher education University of Berne - BE
Main discipline Philosophy
Start/End 01.06.2010 - 30.04.2013
Approved amount 205'137.00
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All Disciplines (2)

Discipline
Philosophy
Theoretical Physics

Keywords (5)

causality; quantum mechanics; locality; EPR paradox; Bell's theorem

Lay Summary (English)

Lead
Lay summary
To assess the implications of the violation of Bell's inequality it is essential to have a minimal set of assumptions from which the inequality can be derived. To this end, we will analyze local causality and auxiliary assumptions of the existing derivations into precisely defined and clearly separated assumptions of causality and locality. To obtain a minimal set of assumptions we will also consider experimental setups that are different from the standard one. Drawing on our previous discovery of a minimal assumption derivation of a Bell-type inequality we will thus continue the quest for a yet more general set of assumptions that entail Bell's inequality. This will provide the appropriate basis for a substantial reductio ad absurdum since none of the assumptions will be redundant.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Employees

Publications

Publication
Local Acausality
Wüthrich Adrian (2014), Local Acausality, in Foundations of Physics, 44(6), 594-609.
John S. Bell: Sechs mögliche Welten der Quantenmechanik
Wüthrich Adrian (2013), John S. Bell: Sechs mögliche Welten der Quantenmechanik, in Physik Journal, 12(2), 46-46.
Locality, Causality, and Realism in the Derivation of Bell's Inequality
Wüthrich Adrian (2013), Locality, Causality, and Realism in the Derivation of Bell's Inequality, Edition Open Access, Berlin, 149-161.
New Vistas on Old Problems: Recent Approaches to the Foundations of Quantum Mechanics
Wüthrich Adrian, Sauer Tilman (ed.) (2013), New Vistas on Old Problems: Recent Approaches to the Foundations of Quantum Mechanics, Edition Open Access, Berlin.

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Second Lucerne Graduate Conference Talk given at a conference Why are all philosophers realists? 15.02.2013 Luzern, Schweiz, Switzerland Wüthrich Adrian;
Kolloquium, Philosophisches Seminar Individual talk Lokalität, Kausalität und Realismus in der Ableitung der Bellschen Ungleichung 17.01.2013 Köln, Deutschland, Germany Wüthrich Adrian;
DPG Sommerworkshop 2012: "Kausalitaet und Physik" Talk given at a conference Kausale Strukturen hinter Korrelationen ohne Abschirmer 23.08.2012 München, Deutschland, Germany Wüthrich Adrian;
The metaphysics of contemporary physics Talk given at a conference Common cause realism in the EPR experiment 24.05.2012 Lausanne, Schweiz, Switzerland Wüthrich Adrian;
Lunchtime Colloquium, Center for Philosophy of Science Individual talk Splitting the Hairs of Locality: How and Why? 27.09.2011 Pittsburgh, USA, United States of America Wüthrich Adrian;
Quantum Information and Foundations Seminar, Carnegie Mellon University Individual talk Minimal assumption derivations of Bell-type inequalities 08.09.2011 Pittsburgh, USA, United States of America Wüthrich Adrian;
75. Jahrestagung der Deutschen Physikalischen Gesellschaft Talk given at a conference EPR's reality criterion as a principle of causality 13.03.2011 Dresden, Deutschland, Germany Wüthrich Adrian;


Self-organised

Title Date Place

Knowledge transfer events

Active participation

Title Type of contribution Date Place Persons involved
Weiterbildung Philosophielehrer des Kantons Luzern 17.09.2010 Bern, Switzerland Wüthrich Adrian;


Communication with the public

Communication Title Media Place Year
Talks/events/exhibitions Weiterbildung Philosophielehrer des Kantons Luzern German-speaking Switzerland 2010

Associated projects

Number Title Start Funding scheme
103988 Extensionen einer Regularitätstheorie der Kausalität 01.04.2004 Project funding (Div. I-III)

Abstract

To assess the implications of the violation of Bell's inequality it is essential to have a minimal set of assumptions from which the inequality can be derived. To this end, we will analyze local causality and auxiliary assumptions of the existing derivations into precisely defined and clearly separated assumptions of causality and locality. To obtain a minimal set of assumptions we will also consider experimental setups that are different from the standard one. Drawing on our previous discovery of a minimal assumption derivation of a Bell-type inequality we will thus continue the quest for a yet more general set of assumptions that entail Bell's inequality. This will provide the appropriate basis for a substantial reductio ad absurdum since none of the assumptions will be redundant.
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