Floquet-Bloch Bands — Periodically Driven Lattice

H(t) = H₀ + V·cos(ωt) | Quasienergy bands fold into Floquet-Brillouin zone [−ω/2, ω/2]

Drive amplitude V/t₀ 1.5

Drive frequency ω/t₀ 4.0

Hopping t₀ 1.0

Floquet replicas N 3

Bandwidth W —

J₀(V/ω) —

Phase —

Effective hopping: J_eff = t₀·J₀(V/ω)
Dynamical band flattening at zeros of J₀
Avoided crossings: Floquet replicas mix