# Kinetics of vapor-liquid transition of active matter system under quasi one-dimensional confinement

Source: [Kinetics of vapor-liquid transition of active matter system under quasi one-dimensional confinement](<https://www.sota2.com/research/paper/68fa479f1e209131ce92954c>)

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

Data updated: 2025-10-25T06:25:27.350Z

Authors: Parameshwaran A, Bhaskar Sen Gupta

Published: 2024-08-02T11:24:42.000Z

## Abstract

We study the kinetics of vapor-liquid phase separation in a quasi one-dimensional confined active matter system using molecular dynamics simulations. Activity is invoked via the Vicsek rule, while passive interaction follows the Lennard-Jones potential. With the system density near the vapor branch, the evolution morphology features disconnected liquid clusters. In the passive limit, coarsening begins with nucleation, followed by an evaporation-condensation growth mechanism, leading to a metastable state without complete phase separation. We aim to understand the impact of Vicsek-like self-propulsion on the structure and growth of these clusters. Our key finding is that Vicsek activity results in a distinct growth mechanism, notably rapid cluster growth and the breakdown of the metastable state through ballistic aggregation. Relevant growth laws are analyzed and explained using appropriate theoretical models.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2408.01195>)

[PDF](<https://arxiv.org/pdf/2408.01195.pdf>)