Collective excitations in liquid carbon tetrachloride: a molecular dynamics study

TL;DR

This study uses molecular dynamics simulations to investigate collective excitations in liquid carbon tetrachloride, confirming the presence of positive sound dispersion and aligning well with experimental data.

Contribution

It provides new molecular dynamics insights into collective excitations and sound dispersion in liquid carbon tetrachloride, linking relaxation processes to observed phenomena.

Findings

Simulation results agree with experimental data

Confirmation of large positive sound dispersion

Relaxation processes differ from atomic systems

Abstract

We perform a molecular dynamic study of collective excitations of carbon tetrachloride and compare the results with experimental data from the literature. The data of simulations are in good argeement with the experimental ones. The results of the simulations confirm the presence of large positive sound dispersion (PSD) in carbon tetrachloride, which should be related to some relaxation processes which do not take place in atomic systems.