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Dynamical instability in a Floquet-driven dissipative system

Year: 2026

Type: article

Abstract: We analyse the magnon spectrum and distribution function of the antiferromagnetic phase of the Floquet-driven Hubbard model. Above a critical drive strength, we find a dynamical instability, resulting from a change in sign of the magnon damping at a non-zero wavevector. The change in sign means that infinitesimal fluctuations grow with time, corresponding to an instability of the driven state. Implications for the nonequilibrium distribution function and the strong drive nonlinear dynamics are discussed.

Source: Physical review. B./Physical review. B

DOI: 10.1103/251l-jnp3

Authors: Takuya Okugawa, Jens Paaske, Martin Eckstein, Michael A. Sentef, Angel Rubio, Andrew J. Millis

Language: English

Topic: Advanced Condensed Matter Physics

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W7119782139

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