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arXiv · 2403.18194

Floquet Product Mode

Hsiu-Chung Yeh·Achim Rosch·Aditi Mitra
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Abstract

Results are presented for the dynamics of edge modes in interacting Floquet Ising chains. It is shown that in addition to the quasi-stable $0$ and $\pi$ edge modes, a third long lived edge mode arising from the operator product of the $0$ and $\pi$ edge modes exists. Depending on the microscopic parameters, this Floquet product mode is shown to have a substantially longer lifetime than the individual $0$ and $\pi$ modes. This is triggered by a scattering process which converts a $0$ mode into a $\pi$ mode while scattering two bulk excitations. This process can lead to a rapid decay of both $0$ and $\pi$ mode without affecting the product mode.

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Hsiu-Chung Yeh, Achim Rosch, Aditi Mitra. 2024-03-27. Floquet Product Mode. https://doi.org/10.1103/physrevb.110.075117

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