Effective Temperature in Active Brownian Particles

2019/04/01 by Leticia F. Cugliandolo, Giuseppe Gonnella, Isabella Petrelli
Materials Science · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Brownian motion #Dissipation #Effective temperature #Fluctuation-dissipation theorem #Homogeneous #Material Dynamics and Properties #Micro and Nano Robotics #Physics #Quantum mechanics #Statistical physics #Thermodynamics

paper · pdf · doi:10.1142/s021947751940008x

openalex publication_date 2019/04/01 · crossref created 2019/04/01 · openalex created_date 2019/04/11 · crossref issued 2019/05/29 · crossref published 2019/05/29 · crossref published-online 2019/05/29 · crossref published-print 2019/06/01 · crossref deposited 2019/08/07 · openalex updated_date 2026/08/04 · crossref indexed 2026/08/04

Abstract

In this paper, we perform a numerical analysis of the effective temperature extracted from the deviations from the fluctuation dissipation theorem in a system of active Brownian spherical particles with excluded volume interactions. We show that, in the low density homogeneous phase at fixed Péclet number, the effective temperature decreases when the density of the system is increased. We compare this trend to the one found in the literature with simulations of other active models.

Citations

• Athermal Phase Separation of Self-Propelled Particles with No Alignment
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