Fig. 4.

Shape of rescaled BPs. Comparison of the re-scaled BPs ((D(ω)/ω ^d−1)/H _b vs. ω/ω _b) of our results and those found by Buchenau and colleagues²⁷ for vitreous silica (red open circles) and PMMA (green open squares), those found by Sokolov and colleagues¹ in molecular glasses Li₂O (blue diamonds) and SiO₂ (magenta inverted triangles), and those found by Monaco et al.³⁷ in Na₂FeSi₃O₈ glasses (black stars). Here H _b is the height of BP, ω _b is the peak frequency, and d is the dimension with d = 2 in 2D and d = 3 in 3D. The filled symbols represent the data from the current experiment, and different symbols indicate different pressures corresponding to the curves in Fig. 2(b)