# Reentrant Phase Behavior in Active Colloids with Attraction

Source: [Reentrant Phase Behavior in Active Colloids with Attraction](<https://www.sota2.com/research/paper/68fa2c831e209131ce8508d8>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T15:22:57.399Z

Authors: Gabriel S. Redner, Aparna Baskaran, Michael F. Hagan

Published: 2013-03-13T15:44:50.000Z

## Abstract

Motivated by recent experiments, we study a system of self-propelled colloids that experience short-range attractive interactions and are confined to a surface. Using simulations we find that the phase behavior for such a system is reentrant as a function of activity: phase-separated states exist in both the low- and high-activity regimes, with a homogeneous active fluid in between. To understand the physical origins of reentrance, we develop a kinetic model for the system's steady-state dynamics whose solution captures the main features of the phase behavior. We also describe the varied kinetics of phase separation, which range from the familiar nucleation and growth of clusters to the complex coarsening of active particle gels.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1303.3195>)

[PDF](<https://arxiv.org/pdf/1303.3195.pdf>)