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Author(s): Giuseppe Fava, Andrea Gambassi, and Francesco Ginelli Confining in space the equilibrium fluctuations of statistical systems with long-range correlations is known to result into effective forces on the boundaries. Here we demonstrate the occurrence of Casimir-like forces in the nonequilibrium context provided by flocking active matter. In particular, w… [Phys. Rev. Lett. 133, 148301] Published Wed Oct 02, 2024

Author(s): James D. Farrell, Jure Dobnikar, Rudolf Podgornik, and Tine Curk The ability of double-stranded DNA or RNA to locally melt and form kinks leads to strong nonlinear elasticity effects that qualitatively affect their packing in confined spaces. Using analytical theory and numerical simulation we show that kink formation entails a mixed spool-nematic ordering of dou… [Phys. Rev. Lett. 133, 148101] Published Tue Oct 01, 2024

Author(s): Ryan LeFebre, Joseph A. Landsittel, David E. Stone, and Andrew Mugler Directional chemosensing is ubiquitous in cell biology, but some cells such as mating yeast paradoxically degrade the signal they aim to detect. While the data processing inequality suggests that such signal modification cannot increase the sensory information, we show using a reaction-diffusion mod… [Phys. Rev. Lett. 133, 138402] Published Fri Sep 27, 2024

Author(s): Xin-Ya Zhang, Jack Murdoch Moore, Xiaolei Ru, and Gang Yan Researchers leverage synapse-level maps of the fruit fly brain to examine how neuronal connection probabilities vary with distance, offering insights into how these neuronal networks may optimize function within spatial constraints. [Phys. Rev. Lett. 133, 138401] Published Mon Sep 23, 2024

Author(s): Yi-Ting Chuang and Liang-Yan Hsu In this Letter, we unveil an eccentric superradiance phenomenon in molecular aggregates coupled to surface plasmon polaritons. Through the quantization of electromagnetic fields in media, we demonstrate that superradiance can be significantly enhanced by polaritons and its behavior distinguishably s… [Phys. Rev. Lett. 133, 128001] Published Tue Sep 17, 2024

Author(s): Patrick Jentsch and Chiu Fan Lee The Vicsek simulation model of flocking together with its theoretical treatment by Toner and Tu in 1995 were two foundational cornerstones of active matter physics. However, despite the field’s tremendous progress, the actual universality class (UC) governing the scaling behavior of Viscek’s “flocki… [Phys. Rev. Lett. 133, 128301] Published Tue Sep 17, 2024

Author(s): Ram M. Adar and Jean-François Joanny Many active systems display nematic order, while interacting with their environment. In this Letter, we show theoretically how environment-stored memory acts an effective external field that aligns active nematics. The coupling to the environment leads to substantial modifications of the known phase… [Phys. Rev. Lett. 133, 118402] Published Fri Sep 13, 2024