Stochastic continuum theory of active nematics

Shradha Mishra, Francesco Ginelli, Hugues Chate, Sriram Ramaswamy, Sanja Puri

Research output: Contribution to conferenceAbstract

Abstract

We derive a stochastic continuum theory of active nematics by direct coarse-graining of a generic microscopic model and study it numerically. This allows to clarify the microscopic origin of the various terms found and to determine the non-trivial structure of the noises. We show in particular that two terms coupling density and order the non-equilibrium active current argued before to be at the origin of giant density fluctuations, and a multiplicative conserved noise are necessary to obtain a faithful description of the original model.

Original languageEnglish
Publication statusPublished - 16 Mar 2009
Event2009 APS March Meeting - , United States
Duration: 16 Mar 200920 Mar 2009

Conference

Conference2009 APS March Meeting
CountryUnited States
Period16/03/0920/03/09

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Mishra, S., Ginelli, F., Chate, H., Ramaswamy, S., & Puri, S. (2009). Stochastic continuum theory of active nematics. Abstract from 2009 APS March Meeting , United States.

Stochastic continuum theory of active nematics. / Mishra, Shradha; Ginelli, Francesco; Chate, Hugues; Ramaswamy, Sriram ; Puri, Sanja.

2009. Abstract from 2009 APS March Meeting , United States.

Research output: Contribution to conferenceAbstract

Mishra, S, Ginelli, F, Chate, H, Ramaswamy, S & Puri, S 2009, 'Stochastic continuum theory of active nematics' 2009 APS March Meeting , United States, 16/03/09 - 20/03/09, .
Mishra S, Ginelli F, Chate H, Ramaswamy S, Puri S. Stochastic continuum theory of active nematics. 2009. Abstract from 2009 APS March Meeting , United States.
Mishra, Shradha ; Ginelli, Francesco ; Chate, Hugues ; Ramaswamy, Sriram ; Puri, Sanja. / Stochastic continuum theory of active nematics. Abstract from 2009 APS March Meeting , United States.
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AU - Mishra, Shradha

AU - Ginelli, Francesco

AU - Chate, Hugues

AU - Ramaswamy, Sriram

AU - Puri, Sanja

PY - 2009/3/16

Y1 - 2009/3/16

N2 - We derive a stochastic continuum theory of active nematics by direct coarse-graining of a generic microscopic model and study it numerically. This allows to clarify the microscopic origin of the various terms found and to determine the non-trivial structure of the noises. We show in particular that two terms coupling density and order the non-equilibrium active current argued before to be at the origin of giant density fluctuations, and a multiplicative conserved noise are necessary to obtain a faithful description of the original model.

AB - We derive a stochastic continuum theory of active nematics by direct coarse-graining of a generic microscopic model and study it numerically. This allows to clarify the microscopic origin of the various terms found and to determine the non-trivial structure of the noises. We show in particular that two terms coupling density and order the non-equilibrium active current argued before to be at the origin of giant density fluctuations, and a multiplicative conserved noise are necessary to obtain a faithful description of the original model.

M3 - Abstract

ER -