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Revealing Bells nonlocality for unstable systems in high energy physics
Faculty of Physics, University of Vienna, Vienna, Austria.
Sapienza Università di Roma and INFN Sezione di Roma, Rome, Italy.
Laboratori Nazionali di Frascati dell’INFN, Frascati, Italy.
Faculty of Physics, University of Vienna, Vienna, Austria.
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2012 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 72, no 1, article id 1856Article in journal (Refereed) Published
Abstract [en]

Entanglement and its consequences—in particular the violation of Bell inequalities, which defies our concepts of realism and locality—have been proven to play key roles in Nature by many experiments for various quantum systems. Entanglement can also be found in systems not consisting of ordinary matter and light, i.e. in massive meson–antimeson systems. Bell inequalities have been discussed for these systems, but up to date no direct experimental test to conclusively exclude local realism was found. This mainly stems from the fact that one only has access to a restricted class of observables and that these systems are also decaying. In this Letter we put forward a Bell inequality for unstable systems which can be tested at accelerator facilities with current technology. Herewith, the long awaited proof that such systems at different energy scales can reveal the sophisticated “dynamical” nonlocal feature of Nature in a direct experiment gets feasible. Moreover, the role of entanglement and  violation, an asymmetry between matter and antimatter, is explored, a special feature offered only by these meson–antimeson systems

Place, publisher, year, edition, pages
Springer, 2012. Vol. 72, no 1, article id 1856
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-76029DOI: 10.1140/epjc/s10052-012-1856-xISI: 000300631800010OAI: oai:DiVA.org:liu-76029DiVA, id: diva2:512811
Note

Funding Agencies|Austrian Science Fund (FWF)|P21947N16|COST action|MP 1006|

Available from: 2012-03-29 Created: 2012-03-23 Last updated: 2018-09-07Bibliographically approved

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Larsson, Jan-Åke

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