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Roughening Dynamics of Interfaces in the Two-Dimensional Quantum Ising Model

Wladislaw Krinitsin1,2,*,†, Niklas Tausendpfund1,3,*, Matteo Rizzi1,3, Markus Heyl4,5, and Markus Schmitt1,2

  • *These authors contributed equally to this work.
  • †Contact author: w.krinitsin@fz-juelich.de
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Phys. Rev. Lett. 134, 240402 – Published 20 June, 2025

DOI: https://doi.org/10.1103/9bsk-x9rw

Abstract

The properties of interfaces are key to understanding the physics of matter. However, the study of quantum interface dynamics has remained an outstanding challenge. Here, we use large-scale tree tensor network simulations to identify the dynamical signature of an interface roughening transition within the ferromagnetic phase of the 2D quantum Ising model. For initial domain wall profiles we find extended prethermal plateaus for smooth interfaces, whereas above the roughening transition the domain wall decays quickly. Our results can be readily explored experimentally in Rydberg atomic systems.

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Phys. Rev. Lett. 134, 240402– Published 20 June, 2025
  • Received 8 January 2025
  • Accepted 21 May 2025
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

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