Constraints on quantum spacetime-induced decoherence from neutrino oscillations
arXiv (Cornell University)(2023)
摘要
We investigate the implications of decoherence induced by quantum spacetime
properties on neutrino oscillation phenomena. We develop a general formalism
where the evolution of neutrinos is governed by a Lindblad-type equation and we
compute the oscillation damping factor for various models that have been
proposed in the literature. Furthermore, we discuss the sensitivity to these
effects of different types of neutrino oscillation experiments, encompassing
astrophysical, atmospheric, solar, and reactor neutrino experiments. By using
neutrino oscillation data from long-baseline reactors and atmospheric neutrino
observations, we establish stringent constraints on the energy scale governing
the strength of the decoherence induced by stochastic metric fluctuations,
amounting to, respectively, E_QG≥ 2.6 · 10^34 GeV and
E_QG≥ 2.5· 10^55 GeV.
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关键词
neutrino
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