2018/09/30 by Nicklas Walldorf, Dante M. Kennes, Jens Paaske +1 · 1 citation
Mathematics · Physics and Astronomy · #Amplitude #Antiferromagnetism #Condensed matter physics #Distribution (mathematics) #Excited state #Ferromagnetism #Floquet theory #Hubbard model #Magnon #Mathematical analysis #Mathematics #Non-equilibrium thermodynamics #Phase (matter) #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum electrodynamics #Quantum many-body systems #Quantum mechanics #Saddle #Saddle point #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.100.121110
published as Phys. Rev. B 100, 121110 (2019)
openalex publication_date 2019/09/20 · arxiv created 2019/09/23 · arxiv updated 2019/09/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A saddle point plus fluctuation analysis of the periodically driven half-filled two-dimensional Hubbard model is performed. For drive frequencies below the equilibrium gap, we find discontinuous transitions to time-dependent solutions. A highly excited, generically nonthermal distribution of magnons occurs even for drive frequencies far above the gap. Above a critical drive amplitude, the low-energy magnon distribution diverges as the frequency tends to zero and antiferromagnetism is destroyed, revealing the generic importance of collective mode excitations arising from a nonequilibrium drive.