From this representation, we see that for small γ γ the Fourier transform χ χ ~ ~ ( ω ω ) of the linear response function yields a pronounced maximum (" Resonance ") at the frequency ω ω ≈ ≈ ω ω 0 . The linear response function for a harmonic oscillator is mathematically identical to that of an RLC circuit. The width of the maximum, Δ Δ ω ω , typically is much smaller than ω ω 0 , so that the Quality factor Q := ω ω 0 / Δ Δ ω ω can be extremely large.