Evidence of fluctuation-induced first-order phase transition in active matter
Soft Condensed Matter
2023-01-11 v2 Statistical Mechanics
Abstract
We study the properties of the Malthusian Toner-Tu theory in its near ordering phase. Because of the birth/death process, characteristic of this Malthusian model, density fluctuations are partially suppressed. We study this model using the perturbative renormalization group. At one loop we find that the renormalization group flow drives the system in an unstable region, suggesting a fluctuation-induced first-order phase transition.
Keywords
Cite
@article{arxiv.2202.01010,
title = {Evidence of fluctuation-induced first-order phase transition in active matter},
author = {Luca Di Carlo and Mattia Scandolo},
journal= {arXiv preprint arXiv:2202.01010},
year = {2023}
}
Comments
In this second version of the manuscript, we have made several minor changes: correcting typos and reorganizing the material in the main text. Moreover, we expanded the supplementary information adding more details on the calculation