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