Revealing Bell's nonlocality for unstable systems in high energy physics

Autor(en)
Beatrix Hiesmayr, Antonio Di Domenico, Catalina Curceanu, Andreas Gabriel, Marcus Huber, Jan-Ake Larsson, Pawel Moskal
Abstrakt

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 CP violation, an asymmetry between matter and antimatter, is explored, a special feature offered only by these meson-antimeson systems.

Organisation(en)
Teilchenphysik
Externe Organisation(en)
Università degli Studi di Roma La Sapienza, Istituto Nazionale di Fisica Nucleare (INFN), Roma, Linköping University, Jagiellonian University in Krakow
Journal
European Physical Journal C
Band
72
Anzahl der Seiten
6
ISSN
1434-6044
DOI
https://doi.org/10.1140/epjc/s10052-012-1856-x
Publikationsdatum
2012
Peer-reviewed
Ja
ÖFOS 2012
103034 Teilchenphysik
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/revealing-bells-nonlocality-for-unstable-systems-in-high-energy-physics(fef8fc40-3b43-4b6e-ac80-295ddc41551b).html