Speaker
Description
Recent advancements in quantum mechanics have challenged the classical understanding of decay processes, traditionally encapsulated by the exponential decay law. This presentation, based on our previous work [1], delves into the nonexponential decay regimes in open quantum systems, a domain governed by the continuum. The study illuminates the theoretical predictions and experimental opportunities surrounding deviations from exponential decay, particularly in the context of atomic nuclei, yet extends its relevance to a broad array of many-body open quantum systems including hadrons, atoms, molecules, and nanostructures.
The research introduces novel observables for experimental exploration of the post-exponential decay regime, focusing on the decay of threshold resonances, particle correlations in three-body decays, and interference between near-lying resonances. Through detailed methodological advancements, we shed light on the quantum interference in nonexponential decay and propose promising candidates and scenarios for further experimental verification in the uncharted territory of quantum decay dynamics.
This work is supported by the National Key Research and Development Program (MOST 2022YFA1602303 and 2023YFA1606404); the National Natural Science Foundation of China under Contract No. 12347106 and No. 12147101; the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under award numbers DE-SC0013365 (Michigan State University), DE-SC0009883 (Florida State University), and DE-SC0023175 (NUCLEI SciDAC-5 collaboration).
[1] S. M. Wang, W. Nazarewicz, A. Volya, and Y. G. Ma, Phys. Rev. Research 5, 023183 (2023).
