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- W4281569202 abstract "It is well known, both theoretically and experimentally, that the survival probability for an unstable quantum state, formed at $t=0,$ is not a simple exponential function, even if the latter is a good approximation for intermediate times. Typically, unstable quantum states/particles can decay in more than a single decay channel. In this work, the general expression for the probability that an unstable state decays into a certain $i$-th channel between the initial time $t=0$ and an arbitrary $t>0$ is provided, both for nonrelativistic quantum states and for relativistic particles. These partial decay probabilities are also not exponential and their ratio turns out to be not a simple constant, as it would be in the exponential limit. Quite remarkably, these deviations may last relatively long, thus making them potentially interesting in applications. Thus, multichannel decays represent a promising and yet unexplored framework to search for deviations from the exponential decay law in quantum mechanical systems, such as quantum tunnelling, and in the context of particle decays." @default.
- W4281569202 created "2022-05-27" @default.
- W4281569202 creator A5034665552 @default.
- W4281569202 date "2022-08-01" @default.
- W4281569202 modified "2023-10-13" @default.
- W4281569202 title "Multichannel decay law" @default.
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- W4281569202 doi "https://doi.org/10.1016/j.physletb.2022.137200" @default.
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