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Rice, Locusts, and Excitonic Bose-Einstein Condensation: A Hydrodynamic Theory of Polar Active Smectics

Rice, Locusts, and Excitonic Bose-Einstein Condensation: A Hydrodynamic Theory of Polar Active Smectics

Monday, April 21, 2014 at 4:00 pm
Weniger 116
Prof. John Toner, Department of Physics, University of Oregon
I'll present a hydrodynamic theory of "polar active smectics", which are "active" (e.g., living) systems that spontaneously layer. These prove to be far more ordered than their equilibrium counterparts, and exhibit a dynamical "Kosterlitz-Thouless" transition when they melt. I'll also discuss the surprising connection between these systems and non-equilibrium Bose-Einstein condensation, which leads to the rather surprising conclusion that two dimensional non-equilibrium superfluidity is impossible in isotropic systems, but possible in anisotropic ones.
Zwolak