Fig. 5: Overcoming causality constraint.
From: Acoustic blackbody through instability-induced softening
a Normalized absorption integral Σ/ (4π2d) vs. current I. Icr: critical current. b Σ/(4π2d) vs. MPP pore size ℓ for the same cavity and MPP. ℓ0 = 0.3 mm: critical pore size. Circles: simulation results; curves: theoretical predictions.
