Fig. 6: Radial pair distribution functions and corresponding vibrational power spectra for the pure carbon system at selected temperatures and pressures.

Data from DFT, the 2024 ChIMES carbon model (used by the Hierarchically and Partially-Hierarchically learned models), and the traditionally fit (Standard) models are given in blue, magenta, and green, respectively. DFT and 2024 ChIMES carbon model data are adapted from ref. 26.