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- W3088779888 abstract "Neutrinos lose coherence as they propagate, which leads to the fading away of oscillations. In this work, we model neutrino decoherence induced in open quantum systems from their interaction with the environment. We first present two different models in the quantum mechanical framework, in which the environment is modeled as forced harmonic oscillators with white noise interactions, or two-level systems with stochastic phase kicks. We then look at the decoherence process in the quantum field theoretic framework induced by elastic scatterings with environmental particles. The exponential decay is obtained as a common feature for all models, which shows the universality of the decoherence processes. We discuss connections to the GKSL master equation approach and give a clear physical meaning of the Lindblad operators. We demonstrate that the universality of exponential decay of coherence is based on the Born-Markov approximation. The models in this work are suitable to be extended to describe real physical processes that could be non-Markovian." @default.
- W3088779888 created "2020-10-01" @default.
- W3088779888 creator A5076603860 @default.
- W3088779888 date "2020-09-28" @default.
- W3088779888 modified "2023-10-17" @default.
- W3088779888 title "Neutrino Decoherence in Simple Open Quantum Systems" @default.
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- W3088779888 doi "https://doi.org/10.48550/arxiv.2009.13471" @default.
- W3088779888 hasPublicationYear "2020" @default.
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