Floquet quantum many-body scars in the tilted Fermi-Hubbard chain

• URL: http://arxiv.org/abs/2504.02152v1
• Date: Wed, 02 Apr 2025 21:54:58 GMT
• Title: Floquet quantum many-body scars in the tilted Fermi-Hubbard chain
• Authors: Jun-Yin Huang, Li-Li Ye, Ying-Cheng Lai,
• Abstract summary: We uncover the emergence of Floquet scarring states, a class of quantum many-body scarring (QMBS) states that defy random thermalization.<n>We derive the exact conditions under which the exotic QMBS states emerge.<n>Those results open the possibility of modulating and engineering solid-state quantum many-body systems to achieve nonergodicity.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: The one-dimensional tilted, periodically driven Fermi-Hubbard chain is a paradigm in the study of quantum many-body physics, particularly for solid-state systems. We uncover the emergence of Floquet scarring states, a class of quantum many-body scarring (QMBS) states that defy random thermalization. The underlying physical mechanism is identified to be the Floquet resonances between these degenerate Fock bases that can be connected by one hopping process. It is the first-order hopping perturbation effect. Utilizing the degenerate Floquet perturbation theory, we derive the exact conditions under which the exotic QMBS states emerge. Phenomena such as quantum revivals and subharmonic responses are also studied. Those results open the possibility of modulating and engineering solid-state quantum many-body systems to achieve nonergodicity.

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