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Mathematical Physics Seminar

Active Topology

Cristina Marchetti – UC Santa Barbara

Location:  Zoom
Date & time: Wednesday, 24 March 2021 at 10:45AM - 11:45AM

Cristina Marchetti – UC Santa Barbara

Wednesday, March 24, 10:45AM

“Active Topology” 

Abstract: Topology plays a key role in condensed matter physics, underlying much of our understanding of equilibrium matter in terms of defects in ordered media and topologically protected states. In active systems – collections of entities that consume energy to generate their own motion and forces – topological phenomena can take on new and surprising roles. I will describe some of these behaviors focusing on liquid-crystalline active matter in two dimensions, specifically active nematic liquid crystals, where defects become motile particles, drive spatio-temporally chaotic flows, and can themselves organize in emergent ordered states.

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