Active processes drive biological dynamics across various scales and include subcellular
cytoskeletal remodelling, tissue development in embryogenesis and the population-level …

Quasiparticles are low-energy excitations with important roles in condensed matter physics.
An intriguing example is provided by Majorana quasiparticles, which are equivalent to their …

We numerically model a two-dimensional active nematic confined by a periodic array of
fixed obstacles. Even in the passive nematic, the appearance of topological defects is …

We theoretically investigate the interaction between magnons and a skyrmion-textured
domain wall in a two-dimensional antiferromagnet and elucidate the resultant properties of …

An exact kinematic law for the motion of disclination lines in nematic liquid crystals as a
function of the tensor order parameter Q is derived. Unlike other order parameter fields that …

Within the Gross-Pitaevskii theory, we study precursory pattern formations to the nucleation
of vortex dipoles in a two-dimensional Bose-Einstein condensate stirred by a Gaussian …

Active emulsions and liquid crystalline shells are intriguing and experimentally realisable
types of topological matter. Here we numerically study the morphology and spatiotemporal …

Topological defects—locations of local mismatch of order—are a universal concept playing
important roles in diverse systems studied in physics and beyond, including the universe …

Colloids dispersed in nematic liquid crystals form topological composites in which colloid-
associated defects mediate interactions while adhering to fundamental topological …

We develop an approximate, analytical model for the velocity of defects in active nematics by
combining recent results for the velocity of topological defects in nematic liquid crystals with …