Statistical and Biological Physics

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In studies of nonequilibrium phase transitions, many different forms of local interactions have been investigated. But how do long-ranged interactions influence the critical dynamics of a colony of active agents? In order to study this question, we analyze the critical dynamics of reproducing agents subject to long-range chemical interactions and limited resources. Specifically, we study a model of chemically interacting agents, whose population dynamics are accounted for by Fisher-Kolmogorov dynamics. The chemotactic interaction is modeled by Keller-Segel like active motion, i.e., the agents are assumed to preferably move along gradients in a chemical field sourced by themselves. more

Can a living cell be synthesized de novo, and can we reconstruct such remarkable feature as cell motility in their biomimetic analogues? Cell motion is a fundamental aspect of life, involving intricate chemical and mechanical processes across various time and length scales. Recreating cell-like motion in a controlled environment is a challenging yet invaluable approach for unraveling the essence of life. In particular, generating persistent motion in liposomes driven by a mechanochemical feedback loop without the need for a cytoskeleton, remained elusive due to its complexity. more