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Abstract Shake-up phenomena, rooted in the sudden approximation and many-body quantum dynamics, unveil critical characteristics of quantum systems, with wide-ranging applications in molecular spectroscopy and electronic structure studies. Here, this principle is extended to magnetic systems, and magnon shake-up structures and their relevance in generating and sensing magnon-magnon entanglement are demonstrated. This not only reveals new insights into shake-up phenomena and quantum magnetism but also paves the way for new opportunities in quantum technologies.
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Vahid Azimi-Mousolou
Erik Sjöqvist
Anna Delin
npj Computational Materials
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Azimi-Mousolou et al. (Thu,) studied this question.
www.synapsesocial.com/papers/6a080ae2a487c87a6a40ced9 — DOI: https://doi.org/10.1038/s41524-026-02120-y