Figure 3
From: Heterogeneous shear elasticity of glasses: the origin of the boson peak

Frequency dependence of the longitudinal and transverse sound velocities (a) and (b) and corresponding sound attenuation coefficients (c) and (d), as extracted from the current-current autocorrelation functions using the damped-harmonic-oscillator parametrization, Eq. (1) for the three temperatures specified in Fig. 2.