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SUMMARY:Testing Bertlmann Socks and other Quantum Features at KLOE2
DTSTART;VALUE=DATE-TIME:20101202T140000Z
DTEND;VALUE=DATE-TIME:20101202T163000Z
DTSTAMP;VALUE=DATE-TIME:20190626T200418Z
UID:indico-event-3009@agenda.infn.it
DESCRIPTION: ABSTRACT\n\n\n\nParticle physics has become an interesting te
sting ground for questions of foundations of quantum mechanics. Entangled
massive meson-antimeson systems are specially suitable as they offer a uni
que laboratory to test various aspects of particle physics (CP violation\,
CPT violation\,...) as well to test foundations of quantum mechanics\, e.
g. Bell inequalities\, decoherence effects\, quantum marking and erasure c
oncepts\, Bohr's complementary relation\, possible effects coming from mod
els beyond the Standard Model\, ....\nIn this talk I will elucidate why it
is interesting to study foundations of quantum mechanics in systems not c
onsisting of ordinary matter and light. I will as well comment on experime
nts the KLOE collaboration performed and possible new experiments which ca
n be realized.\nParticularly\, I show that a certain Bell inequality\, tes
ting the realistic and nonlocal feature of quantum mechanics\, is surprisi
ngly related to the observed CP violation. Herewith two different powerful
concepts in physics\, entanglement or its manifestation and symmetry\, be
come related. Then I show a Bell inequality sensitive to the quantum numbe
r strangeness which is not violated for the maximally entangled spin singl
et state\, but surprisingly for a non--maximally entangled state. This ope
ns --- for the first time --- the possibility of a direct experimental tes
t whether local realistic theories can be refuted for the K--meson system.
\nLast but not least I will review decoherence studies for entangled meson
--antimeson systems and show recent bounds obtained by various accelerator
experiments (including KLOE) and comment on a quantum marking and erasure
experiments with neutral kaons which is interesting\, because one can do
eraser options which are not available by other quantum systems.\nIn summa
ry\, understanding the nature of entanglement and its manifestation needs
also studies of entanglement at different energy scales and as recent work
s show there are still many open questions concerning entanglement\, e.g.
about high--dimensional genuine multi--partite entanglement.\n\n\n\n\nhttp
s://agenda.infn.it/event/3009/
LOCATION:Laboratori Nazionali di Frascati\, Via Enrico Fermi 40\, Frascati
Aula Seminari
URL:https://agenda.infn.it/event/3009/
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