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SUMMARY:Quantum hydrodynamics with Bose-Einstein condensates: dynamics in 
 phase-wound superfluid mixtures - Peter Engels (Washington State Universit
 y)
DTSTART:20221205T140000Z
DTEND:20221205T143000Z
UID:TALK183752@talks.cam.ac.uk
DESCRIPTION:Dilute-gas Bose-Einstein condensates are a prime tool for the 
 study of dispersive hydrodynamics. Capitalizing on the diverse set of tool
 s available to atomic physics\, numerous spectacular results have been exp
 erimentally obtained by various groups\, including the realization of topo
 logical features\, shocks\, turbulence\, caustics\, and more.\nIn this tal
 k\, we will present new results from the frontier of densely packed solito
 n trains. We present an experimental technique allowing us to create tunab
 le phase wound arrays in a two-component mixture\, ranging from broad feat
 ures to tightly packed trains.\nThese phase windings exhibit rich mean fie
 ld dynamics\, including shape oscillations and soliton formation\, which w
 e characterize through direct imaging as well as through Fourier methods. 
 Our results are corroborated by 3D\, time-dependent simulations. This work
  demonstrates a practical path towards the investigation of densely packed
  solitons. &nbsp\;Understanding the dynamics of these structured quantum f
 luids has applications in benchmarking theoretical models for quantum hydr
 odynamics and condensed matter physics simulations\, and can provide an al
 ternative viewpoint on the physics of supersolids.\nWe gratefully acknowle
 dge funding from NSF under grant number PHY-2207588.
LOCATION:Seminar Room 1\, Newton Institute
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