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arXiv · 2201.03536

Quantum wake dynamics in Heisenberg antiferromagnetic chains

Allen Scheie·Pontus Laurell·Bella Lake·Stephen E. Nagler·Matthew B. Stone·Jean-Sebastian Caux·D. Alan Tennant
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Abstract

Traditional spectroscopy, by its very nature, characterizes properties of physical systems in the momentum and frequency domains. The most interesting and potentially practically useful quantum many-body effects however emerge from the deep composition of local, short-time correlations. Here, using inelastic neutron scattering and methods of integrability, we experimentally observe and theoretically describe a local, coherent, long-lived, quasiperiodically oscillating magnetic state emerging out of the distillation of propagating excitations following a local quantum quench in a Heisenberg antiferromagnetic chain. This "quantum wake" displays similarities to Floquet states, discrete time crystals and nonlinear Luttinger liquids.

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Allen Scheie, Pontus Laurell, Bella Lake, Stephen E. Nagler, Matthew B. Stone, Jean-Sebastian Caux, D. Alan Tennant. 2022-01-10. Quantum wake dynamics in Heisenberg antiferromagnetic chains. https://doi.org/10.1038/s41467-022-33571-8

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