Metastability of Discrete-Symmetry Flocks

Brieuc Benvegnen; Omer Granek; Sunghan Ro; Ran Yaacoby; Hugues Chaté; Yariv Kafri; David Mukamel; Alexandre Solon; Julien Tailleur

doi:10.1103/PhysRevLett.131.218301

Metastability of Discrete-Symmetry Flocks

Brieuc Benvegnen, Omer Granek, Sunghan Ro, Ran Yaacoby, Hugues Chaté, Yariv Kafri, David Mukamel, Alexandre Solon, Julien Tailleur

Weizmann Institute of Science, Technion - Israel Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

We study the stability of the ordered phase of flocking models with a scalar order parameter. Using both the active Ising model and a hydrodynamic description, we show that droplets of particles moving in the direction opposite to that of the ordered phase nucleate and grow. We characterize analytically this self-similar growth and demonstrate that droplets spread ballistically in all directions. Our results imply that, in the thermodynamic limit, discrete-symmetry flocks - and, by extension, continuous-symmetry flocks with rotational anisotropy - are metastable in all dimensions.

Original language	English
Article number	218301
Journal	Physical Review Letters
Volume	131
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.131.218301
State	Published - 24 Nov 2023

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

Access to Document

10.1103/PhysRevLett.131.218301

https://arxiv.org/abs/2306.01156License: Other

Cite this

@article{d5ebb8d729be4fba87725ea12e099d2f,

title = "Metastability of Discrete-Symmetry Flocks",

abstract = "We study the stability of the ordered phase of flocking models with a scalar order parameter. Using both the active Ising model and a hydrodynamic description, we show that droplets of particles moving in the direction opposite to that of the ordered phase nucleate and grow. We characterize analytically this self-similar growth and demonstrate that droplets spread ballistically in all directions. Our results imply that, in the thermodynamic limit, discrete-symmetry flocks - and, by extension, continuous-symmetry flocks with rotational anisotropy - are metastable in all dimensions.",

author = "Brieuc Benvegnen and Omer Granek and Sunghan Ro and Ran Yaacoby and Hugues Chat{\'e} and Yariv Kafri and David Mukamel and Alexandre Solon and Julien Tailleur",

note = "Publisher Copyright: {\textcopyright} 2023 American Physical Society.",

year = "2023",

month = nov,

day = "24",

doi = "10.1103/PhysRevLett.131.218301",

language = "الإنجليزيّة",

volume = "131",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Institute of Physics",

number = "21",

}

TY - JOUR

T1 - Metastability of Discrete-Symmetry Flocks

AU - Benvegnen, Brieuc

AU - Granek, Omer

AU - Ro, Sunghan

AU - Yaacoby, Ran

AU - Chaté, Hugues

AU - Kafri, Yariv

AU - Mukamel, David

AU - Solon, Alexandre

AU - Tailleur, Julien

PY - 2023/11/24

Y1 - 2023/11/24

N2 - We study the stability of the ordered phase of flocking models with a scalar order parameter. Using both the active Ising model and a hydrodynamic description, we show that droplets of particles moving in the direction opposite to that of the ordered phase nucleate and grow. We characterize analytically this self-similar growth and demonstrate that droplets spread ballistically in all directions. Our results imply that, in the thermodynamic limit, discrete-symmetry flocks - and, by extension, continuous-symmetry flocks with rotational anisotropy - are metastable in all dimensions.

AB - We study the stability of the ordered phase of flocking models with a scalar order parameter. Using both the active Ising model and a hydrodynamic description, we show that droplets of particles moving in the direction opposite to that of the ordered phase nucleate and grow. We characterize analytically this self-similar growth and demonstrate that droplets spread ballistically in all directions. Our results imply that, in the thermodynamic limit, discrete-symmetry flocks - and, by extension, continuous-symmetry flocks with rotational anisotropy - are metastable in all dimensions.

UR - http://www.scopus.com/inward/record.url?scp=85178471702&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.131.218301

DO - 10.1103/PhysRevLett.131.218301

M3 - مقالة

C2 - 38072587

SN - 0031-9007

VL - 131

JO - Physical Review Letters

JF - Physical Review Letters

IS - 21

M1 - 218301

ER -

Metastability of Discrete-Symmetry Flocks

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this