# Phase Separation Kinetics in a Polar Active Field Model

Source: [Phase Separation Kinetics in a Polar Active Field Model](<https://www.sota2.com/research/paper/68fa4b641e209131ce9457dc>)

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

Data updated: 2025-10-25T08:18:00.168Z

Authors: Massimiliano Semeraro, Leticia F. Cugliandolo, Giuseppe Gonnella, Adriano Tiribocchi

Published: 2025-08-19T14:52:17.000Z

## Abstract

A milestone of phase separation kinetics is the emergence of universal power laws $\\sim t^{1/z}$ governing the domain growth evolution. We investigate a phase-separating polar active model comprising a scalar density field with an advective coupling to a polarization field. Our analysis reveals a novel $\\sim t^{0.6}$ regime, which agrees well with the accelerated growth recently observed in simulations of polar active particles. We provide analytical arguments to explain how advection facilitates the creation of topological defects and compresses the domains leading to faster growth. We also show that the $\\sim t^{0.6}$ regime is robust to several model generalizations.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2508.13888>)

[PDF](<https://arxiv.org/pdf/2508.13888.pdf>)