Quantum spin-flavour memory of ultrahigh-energy neutrino
- URL: http://arxiv.org/abs/2202.06735v1
- Date: Mon, 7 Feb 2022 19:54:05 GMT
- Title: Quantum spin-flavour memory of ultrahigh-energy neutrino
- Authors: P. Kurashvili, L. Chotorlishvili, K. A. Kouzakov, A. I. Studenikin
- Abstract summary: We study uncertainties related to the interstellar ultrahigh-energy neutrino.
We introduce a novel concept: quantum spin-flavour memory.
We find that while most measures of quantum correlations show their irrelevance, the quantum spin-flavour is the quantifier of the quantum spin-flavour memory.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: There are two types of uncertainties related to the measurements done on a
quantum system: statistical and those related to non-commuting observables and
incompatible measurements. The latter indicates the quantum system's inherent
nature and is in the scope of the present study. We explore uncertainties
related to the interstellar ultrahigh-energy neutrino and introduce a novel
concept: quantum spin-flavour memory. Advanced uncertainty measures are
entropic measures, and the effect of the quantum memory reduces the
uncertainty. The problem in question corresponds to a real physical event:
high-energy Dirac neutrinos emitted by some distant source and propagating
towards the earth. The neutrino has a finite magnetic moment and interacts with
both deterministic and stochastic interstellar magnetic fields. To describe the
effect of a noisy environment, we exploit the Lindblad master equation for the
neutrino density matrix. Quantum spin-flavour memory we quantify in terms of
the generalized Kraus's trade-off relation. This trade-off relation converts to
the equality when quantum memory is absent. We discovered that while most
measures of quantum correlations show their irrelevance, the quantum
spin-flavour discord is the quantifier of the quantum spin-flavour memory.
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