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- W4296962269 abstract "Recent years have seen a rapid increase of interest in dense active materials, which, in the disordered state, share striking similarities with conventional passive glass-forming matter. For such passive glassy materials, it is well established (at least in three dimensions) that the details of the microscopic dynamics, e.g., Newtonian or Brownian, do not influence the long-time glassy behavior. Here we investigate whether this still holds true in the non-equilibrium active case by considering two simple and widely used active particle models, i.e., active Ornstein-Uhlenbeck particles (AOUPs) and active Brownian particles (ABPs). In particular, we seek to gain more insight into the role of the self-propulsion mechanism on the glassy dynamics by deriving a mode-coupling theory (MCT) for thermal AOUPs, which can be directly compared to a recently developed MCT for ABPs. Both theories explicitly take into account the active degrees of freedom. We solve the AOUP- and ABP-MCT equations in two dimensions and demonstrate that both models give almost identical results for the intermediate scattering function over a large variety of control parameters (packing fractions, active speeds, and persistence times). We also confirm this theoretical equivalence between the different self-propulsion mechanisms numerically via simulations of a polydisperse mixture of active quasi-hard spheres, thereby establishing that, at least for these model systems, the microscopic details of self-propulsion do not alter the active glassy behavior." @default.
- W4296962269 created "2022-09-25" @default.
- W4296962269 creator A5002188363 @default.
- W4296962269 creator A5006418037 @default.
- W4296962269 date "2022-09-22" @default.
- W4296962269 modified "2023-09-25" @default.
- W4296962269 title "Active Glassy Dynamics is Unaffected by the Microscopic Details of Self-Propulsion" @default.
- W4296962269 doi "https://doi.org/10.48550/arxiv.2209.11098" @default.
- W4296962269 hasPublicationYear "2022" @default.
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