No-signaling-in-time as a condition for macrorealism: the case of neutrino oscillations

We consider two necessary and sufficient conditions for macrorealism recently appeared in the literature, known as no-signaling-in-time and arrow-of-time conditions, respectively, and study them in the context of neutrino flavor transitions, within both the plane wave description and the wave packet...

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Bibliographic Details
Published in:The European physical journal. C, Particles and fields Particles and fields, 2023-08, Vol.83 (8), p.688-9, Article 688
Main Authors: Blasone, Massimo, Illuminati, Fabrizio, Petruzziello, Luciano, Simonov, Kyrylo, Smaldone, Luca
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics and Cosmology
Coherence length
Elementary Particles
Hadrons
Heavy Ions
Inequalities
Measurement Science and Instrumentation
Neutrinos
Nuclear Energy
Nuclear Physics
Oscillations
Physics
Physics and Astronomy
Plane waves
Quantum Field Theories
Quantum Field Theory
Realism
Regular Article - Theoretical Physics
String Theory
Validity
Wave packets
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Summary:We consider two necessary and sufficient conditions for macrorealism recently appeared in the literature, known as no-signaling-in-time and arrow-of-time conditions, respectively, and study them in the context of neutrino flavor transitions, within both the plane wave description and the wave packet approach. We then compare the outcome of the above investigation with the implication of various formulations of Leggett–Garg inequalities. In particular, we show that the fulfillment of the addressed conditions for macrorealism in neutrino oscillations implies the fulfillment of the Leggett–Garg inequalities, whereas the converse is not true. Finally, in the framework of wave packet approach, we also prove that, for distances longer than the coherence length, the no-signaling-in-time condition is always violated whilst the Leggett–Garg inequalities are not.
ISSN:1434-6052
1434-6044
1434-6052
DOI:10.1140/epjc/s10052-023-11870-8