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- W4224880088 abstract "We show that the liquid-state-theory configurational temperature $Tc$ defines an energy scale, which for active-matter models of point particles based on a potential-energy function can be used to determine how to adjust model parameters to achieve approximately invariant structure and dynamics when the density is changed. The required parameter changes are calculated from the variation of a single configuration's $Tc$ upon a uniform scaling of all coordinates. The formalism developed applies for models involving a potential-energy function with hidden scale invariance. The procedure is illustrated by computer simulations of the Kob-Andersen binary Lennard-Jones model with active Ornstein-Uhlenbeck dynamics in three dimensions and the two-dimensional single-component Yukawa model with active Brownian particle dynamics. For the latter model we also show how $Tc$ may be applied for estimating the MIPS phase boundary, in effect reducing by one the dimension of the parameter space. We finally propose that the ratio between the equilibrium-system temperature corresponding to actual potential energy and $Tc$ provides a useful measure of how far an active-matter system is from thermal equilibrium." @default.
- W4224880088 created "2022-04-27" @default.
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- W4224880088 date "2022-04-14" @default.
- W4224880088 modified "2023-09-24" @default.
- W4224880088 title "Configurational temperature in dry active-matter models" @default.
- W4224880088 hasPublicationYear "2022" @default.
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