Emergent Dynamics in Dense Active Matter

We study elastically interacting, dense active systems to investigate novel noise-induced collective phenomena.


2024

Self-Aligning Polar Active Matter. Paul Baconnier, Olivier Dauchot, Vincent Démery, Gustavo Düring, Silke Henkes, Cristián Huepe, and Amir Shee. 


PREPRINT 


Emergent mesoscale correlations in active solids with noisy chiral dynamics. Amir Shee, Silke Henkes, and Cristián Huepe, Soft Matter.


2023

Noise-Induced Quenched Disorder in Dense Active Systems. Guozheng Lin, Zhangang Han, Amir Shee, and Cristián Huepe, Phys. Rev. Lett. 131, 168301.


PREPRINT , RESEARCH ARTICLE 



Exact Active Dynamics


Even though there has been substantial progress in the field of active matter, there is a lack of exact analytic calculations to understand the dynamics of active particles. We developed a direct method, rooted in the polymer statistics [Hermans and Ullman, Physica 18, 951 (1952)] and the Fokker-Planck equation, to compute dynamical moments exactly.




2024

Impact of chirality on active Brownian particle: Exact moments in two and three dimensions, Anweshika Pattanayak, Amir Shee, Debasish Chaudhuri, and Abhishek Chaudhuri. PREPRINT


2022

Self-propulsion with speed and orientation fluctuation: Exact computation of moments and dynamical bistabilities in displacement. Amir Shee and Debasish Chaudhuri, Phys. Rev. E 105, 054148. PREPRINT , RESEARCH ARTICLE 


Active Brownian motion with speed fluctuations in arbitrary dimensions: exact calculation of moments and dynamical crossovers. Amir Shee and Debasish Chaudhuri, Journal of Statistical Mechanics: Theory and Experiment 2022 (1), 013201. PREPRINT , RESEARCH ARTICLE 


2020

Active Brownian particles: mapping to equilibrium polymers and exact computation of moments. Amir Shee, Abhishek Dhar, and Debasish Chaudhuri, Soft Matter 16 (20), 4776 - 4787. PREPRINT , RESEARCH ARTICLE 





Dynamical Patterns in Active Fluids