Related papers: Quantum Late-Time Decay and Channel Dependence

Quantum Late-Time Decay and Channel Dependence

URL: http://arxiv.org/abs/2509.17163v1
Date: Sun, 21 Sep 2025 17:13:12 GMT
Title: Quantum Late-Time Decay and Channel Dependence
Authors: Francesco Giacosa, Anna Kolbus, Krzysztof Kyziol, Magdalena Plodowska, Milena Piotrowska, Karol Szary, Arthur Vereijken,
Abstract summary: We report a power-law tail after $sim$10 lifetimes in erythrosineB fluorescence.<n>The data match a divergent but normalizable spectral density, and theory predicts oscillations as a future test.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: Quantum mechanics predicts deviations from exponential decay at short and long times, yet experimental evidence is limited. We report a power-law tail after $\sim$10 lifetimes in erythrosine~B fluorescence, confirmed by two detectors probing distinct bands but yielding different power coefficients. The data match a divergent but normalizable spectral density, and theory predicts oscillations as a future test. A novel and general result is that in multichannel QM (and QFT) decay the lifetime is universal, but the late-time deviations exhibit a sizeable time window in which they are channel (or band) dependent, a feature consistent with our data.

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