In the 1D Hubbard model, HHG crosses over from Bloch-like intraband at low filling to interband-dominated with plateau near half filling, with stronger U suppressing interband contributions via the Mott gap.
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Tracking doublon-holon dynamics in high-harmonic generation from Mott insulators
In the 1D Hubbard model, HHG crosses over from Bloch-like intraband at low filling to interband-dominated with plateau near half filling, with stronger U suppressing interband contributions via the Mott gap.