ArticleProceedings of the National Academy of Sciences of the United States of America2025
Hidden order in active nematic defects.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Spatial Activity Patterning and Topological Defect Transport in Acoustically Energized Active Liquid Crystals.Small (Weinheim an der Bergstrasse, Germany) · 2026Article
- Orientation-Modulated Hyperuniformity in Frustrated Vicsek-Kuramoto Systems.Entropy (Basel, Switzerland) · 2026Article
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7 authors.
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Abstract
Hyperuniformity and giant number fluctuations represent opposite ends in a spectrum of statistical correlations found in physical systems outside of thermal equilibrium. Dynamic phase transitions exhibit critical points that are hyperuniform, while anomalously large fluctuations are often quoted as a hallmark of active matter. Here, we show that the apparently disordered state of active nematic defects exhibits suppression of fluctuations on scales as large as the system size, reminiscent of what is seen for ordered lattices. Modeling the nematic defects in terms of continuum densities, we show that their distribution becomes asymptotically hyperuniform in the limit where their proliferation is solely driven by activity, rather than by thermal fluctuations. When both effects are at play, the resultant hyperuniform structure is limited to a finite range of length scales, [Formula: see text], with [Formula: see text] as thermal unbinding is suppressed. The system of active nematic defects can therefore be said to possess hidden order across scales provided
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