Research news on Theories of collective dynamics & active matter

Theories of collective dynamics and active matter constitute a set of analytical and computational techniques used to model systems of self-driven units that convert internal or ambient energy into persistent motion, leading to emergent nonequilibrium phenomena. These techniques include continuum hydrodynamic theories, kinetic theory approaches, and agent-based modeling frameworks that describe pattern formation, phase separation, flocking, and anomalous transport in active systems. They provide mathematical tools to derive effective equations of motion, quantify correlations and fluctuations, and predict macroscopic behavior from microscopic interaction rules, enabling systematic analysis of biological, synthetic, and granular active materials beyond equilibrium statistical mechanics.

Tiny particles defy action-reaction symmetry to stay in motion

From schools of fish and flocks of birds to microscopic synthetic particles, many systems in nature and the laboratory consist of individual units or agents that move by consuming energy. These systems are known as active ...

Unraveling the glass-like nature of epithelial tissues

In a new study, researchers at the Indian Institute of Science (IISc) have resolved a longstanding mystery by showing how epithelial tissues exhibit slow-moving, glass-like behavior despite their fast-paced biological activity. ...

How boundary geometry helps embryonic cells organize themselves

One of the most striking biological transitions in nature happens early in development, when an embryo transforms from a simple ball of cells into a highly ordered structure with distinct tissue layers that later develop ...

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