Abstract
We propose a simple microscopic model for active nematic particles similar in spirit to the Vicsek model for self-propelled polar particles. In two dimensions, we show that this model exhibits a Kosterlitz-Thouless-like transition to quasi-long-range orientational order and that in this nonequilibrium context, the ordered phase is characterized by giant density fluctuations, in agreement with the predictions of Ramaswamy et al.
| Original language | English |
|---|---|
| Article number | 180602 |
| Number of pages | 4 |
| Journal | Physical Review Letters |
| Volume | 96 |
| Issue number | 18 |
| DOIs | |
| Publication status | Published - 12 May 2006 |
Keywords
- self-propelled particles
- number fluctuations
- ameboid cells
- flocks
- hydrodynamics
- dimensions
- transitions
- systems
- absence
- waves
Cite this
Simple model for active nematics : Quasi-long-range order and giant fluctuations. / Chate, Hugues; Ginelli, Francesco; Montagne, Raul.
In: Physical Review Letters, Vol. 96, No. 18, 180602, 12.05.2006.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Simple model for active nematics
T2 - Quasi-long-range order and giant fluctuations
AU - Chate, Hugues
AU - Ginelli, Francesco
AU - Montagne, Raul
PY - 2006/5/12
Y1 - 2006/5/12
N2 - We propose a simple microscopic model for active nematic particles similar in spirit to the Vicsek model for self-propelled polar particles. In two dimensions, we show that this model exhibits a Kosterlitz-Thouless-like transition to quasi-long-range orientational order and that in this nonequilibrium context, the ordered phase is characterized by giant density fluctuations, in agreement with the predictions of Ramaswamy et al.
AB - We propose a simple microscopic model for active nematic particles similar in spirit to the Vicsek model for self-propelled polar particles. In two dimensions, we show that this model exhibits a Kosterlitz-Thouless-like transition to quasi-long-range orientational order and that in this nonequilibrium context, the ordered phase is characterized by giant density fluctuations, in agreement with the predictions of Ramaswamy et al.
KW - self-propelled particles
KW - number fluctuations
KW - ameboid cells
KW - flocks
KW - hydrodynamics
KW - dimensions
KW - transitions
KW - systems
KW - absence
KW - waves
U2 - 10.1103/PhysRevLett.96.180602
DO - 10.1103/PhysRevLett.96.180602
M3 - Article
VL - 96
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 18
M1 - 180602
ER -