Journal
EUROPEAN PHYSICAL JOURNAL C
Volume 83, Issue 8, Pages -Publisher
SPRINGER
DOI: 10.1140/epjc/s10052-023-11870-8
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We investigate two necessary and sufficient conditions for macrorealism, namely no-signaling-in-time and arrow-of-time conditions, in the context of neutrino flavor transitions using both the plane wave description and the wave packet approach. We then compare our findings with the implications of various formulations of Leggett-Garg inequalities. Our results show that the fulfillment of the addressed conditions for macrorealism in neutrino oscillations implies the fulfillment of the Leggett-Garg inequalities, but not vice versa. Additionally, within the framework of the wave packet approach, we demonstrate that the no-signaling-in-time condition is always violated for distances longer than the coherence length, while the Leggett-Garg inequalities are not.
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.
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