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Journal Article

Spontaneous chiral symmetry breaking in collective active motion.

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Breier,  Rebekka E.
Group Non-equilibrium soft matter, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Herminghaus,  Stephan
Group Granular matter and irreversibility, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Mazza,  Marco G.
Group Non-equilibrium soft matter, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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https://journals.aps.org/pre/abstract/10.1103/PhysRevE.93.022410
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Citation

Breier, R. E., Selinger, R. L. B., Cicotti, G., Herminghaus, S., & Mazza, M. G. (2016). Spontaneous chiral symmetry breaking in collective active motion. Physical Review E, 93(2): 022410. doi:10.1103/PhysRevE.93.022410.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0029-B919-3
Abstract
Chiral symmetry breaking is ubiquitous in biological systems, from DNA to bacterial suspensions. A key unresolved problem is how chiral structures may spontaneously emerge from achiral interactions. We study a simple model of active swimmers in three dimensions that effectively incorporates hydrodynamic interactions. We perform large-scale molecular dynamics simulations (up to 106 particles) and find long-lived metastable collective states that exhibit chiral organization although the interactions are achiral. We elucidate under which conditions these chiral states will emerge and grow to large scales. To explore the complex phase space available to the system, we perform nonequilibrium quenches on a one-dimensional Lebwohl-Lasher model with periodic boundary conditions to study the likelihood of formation of chiral structures.