Entropy Scaling Laws in Self Propelled Glass Formers

Published: 23 August 2021| Version 1 | DOI: 10.17632/7jkb7cyndm.1


Here we probe a glass forming liquid composed of self- propelled “active” particles and show that increasing the duration of self-propulsion makes the pair excess entropy negatively larger. The associated reduction in the number of accessible configurations per particle leads to a reduction in self- diffusivity. At moderate supercooling, the self-diffusivity is Arrhenius and in a reduced form obeys a Dzugutov like scaling law, directly yielding us a pair excess entropy that is inversely proportional to the effective temperature. In the strongly super-cooled regime, Dzugutov law does not apply and we observe that, the pair excess entropy shows a non-Arrhenius (power law) dependence on the effective temperature with an exponent that depends on the self propulsion time of the active particles.