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High-temperature spin dynamics in the Heisenberg chain: Magnon propagation and emerging Kardar-Parisi-Zhang scaling in the zero-magnetization limit

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Weiner, Felix ; Schmitteckert, Peter ; Bera, Soumya ; Evers, Ferdinand
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Date of publication of this fulltext: 25 May 2021 13:55


The large-scale dynamics of quantum integrable systems is often dominated by ballistic modes due to the existence of stable quasiparticles. We here consider as an archetypical example for such a system the spin-1/2 XXX Heisenberg chain that features magnons and their bound states. An interesting question, which we here investigate numerically, arises with respect to the fate of ballistic modes at ...


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