2017-12-04 - Ore 14.30 - Aula 2G27
"Quantized superfluid vortex dynamics on cylindrical surfaces and planar annuli"
Speaker: Pietro Massignan, UPC - Universitat Politècnica de Catalunya, Barcelona - ICFO - The Institute of Photonic Sciences, Casteldefels (Barcelona)
Proponent: Filippo Cardano, Lorenzo Marrucci
Superfluid vortex dynamics on an infinite cylinder differs significantly from that on a plane. The requirement that a condensate wave function be single valued upon once encircling the cylinder means that such a single vortex cannot remain stationary. Instead, it acquires one of a series of quantized translational velocities around the circumference. The dynamics of a single vortex on a finite cylinder provides a hydrodynamic analog of Laughlin pumping. A cylinder is topologically equivalent to a planar annulus, and on an annulus Laughlin pumping may be more accessible to experimental observation.
Reference: https://arxiv.org/abs/1708.08903