
Topological active matter
A Review discusses the properties of topological defects and topological band structures in active media, and an accompanying Comment describes the role of topolgical defects in biological matter.
A Review discusses the properties of topological defects and topological band structures in active media, and an accompanying Comment describes the role of topolgical defects in biological matter.
The study of Bose–Einstein condensation in photonic systems has attracted strong interest in a variety of physical platforms, including conventional lasers and optical parametric oscillators, exciton and exciton–polariton gases, and photons in dye-filled cavities and propagating geometries. The focus of this Review is to highlight those universal phenomena that stem from the driven-dissipative, non-equilibrium nature of these systems and affect the static, dynamic, superfluid and coherence properties of the condensate.