Inverted quantum many-body scars

by Prof. Anne E. B. Nielsen (University of Aarhus)

Tuesday 25 Oct 2022, 11:00 → 12:00 Europe/Zurich

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Many-body quantum systems typically follow the eigenstate thermalization hypothesis,but interesting alternative behaviors have been found in model systems and observedexperimentally. Many-body localized systems is one example, where all eigenstates in thespectrum have low entanglement. Another example is quantum many-body scars, whereonly a few, highly excited states have low entanglement, while the rest of the spectrumconsists of thermal states with high entanglement. Here, we propose and construct modelsshowing the opposite behavior, namely highly entangled states embedded in a spectrumthat is otherwise many-body localized.