Fig. 4
From: Universal machine learning interatomic potentials are ready for phonons
Violin plots of the errors in (a) the maximum phonon frequency, (b) the vibrational entropy, (c) the Helmholtz free energy, (d) the heat capacity, (e) the density of states and (f) the average of the sound velocity on the 3 accoustic branches, relatively to the PBE reference data.
