3 papers
cond-mat.soft2026
Flow Coupling Alters Topological Phase Transition in Nematic Liquid Crystals
Jayeeta Chattopadhyay, Simon Guldager Andersen, Kristian Thijssen +1
We investigate how coupling to fluid flow influences defect-mediated transitions in two-dimensional passive nematic fluids using fluctuating nematohydrodynamic simulations. The sys…
cond-mat.soft2025
Anti-hyperuniform Critical States of Active Topological Defects
Simon Guldager Andersen, Tianxiang Ma, Makito F. Katsume +4
Topological defects are fundamental to the collective dynamics of non-equilibrium systems and in active matter, mediating spontaneous flows, dynamic self-organization, and emergent…
cond-mat.soft2025
Self-propulsive active nematics
Niels de Graaf Sousa, Simon Guldager Andersen, Aleksandra Ardaševa +1
Increasing evidence suggests that active matter exhibits instances of mixed symmetry that cannot be fully described by either polar or nematic formalism. Here, we introduce a minim…