962 citations · 1.9k across the 9 of their papers we have counts for
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Inertia drives a flocking phase transition in viscous active fluids
Rayan Chatterjee, Navdeep Rana, R. Aditi Simha +2
How fast must an oriented collection of extensile swimmers swim to escape the instability of viscous active suspensions? We show that the answer lies in the dimensionless combinati…
The simplest microscopic model of a complex fluid: flow phenomena and constitutive relation
R. M. L. Evans, Craig A. Hall, R. Aditi Simha +1
It was shown in [PRL 114, 138301 (2015)] that a remarkably simple dynamical model exhibits many of the complex flow regimes and non-equilibrium phase transitions characteristic of…
Soft Active Matter
M. C. Marchetti, J. -F. Joanny, S. Ramaswamy +4
In this review we summarize theoretical progress in the field of active matter, placing it in the context of recent experiments. Our approach offers a unified framework for the mec…
A Dynamic Renormalization Group Study of Active Nematics
Shradha Mishra, R. Aditi Simha, Sriram Ramaswamy
We carry out a systematic construction of the coarse-grained dynamical equation of motion for the orientational order parameter for a two-dimensional active nematic, that is a none…
Rheology of Active-Particle Suspensions
Yashodhan Hatwalne, Sriram Ramaswamy, Madan Rao +1
We study the interplay of activity, order and flow through a set of coarse-grained equations governing the hydrodynamic velocity, concentration and stress fields in a suspension of…
Active nematics on a substrate: giant number fluctuations and long-time tails
Sriram Ramaswamy, R. Aditi Simha, John Toner
We construct the equations of motion for the coupled dynamics of order parameter and concentration for the nematic phase of driven particles on a solid surface, and show that they…
Hydrodynamic fluctuations and instabilities in ordered suspensions of self-propelled particles
R. Aditi Simha, Sriram Ramaswamy
We construct the hydrodynamic equations for {\em suspensions} of self-propelled particles (SPPs) with spontaneous orientational order, and make a number of striking, testable predi…