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This Week at Physics

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Event Number 2001

  Thursday, January 27th, 2011

R. G. Herb Condensed Matter Seminar
Shock waves in cold Fermi atoms
Time: 10:00 am
Place: 5310 Chamberlin
Speaker: Alexander Abanov, Stony Brook University
Abstract: I will discuss a recent experiment performed by James Joseph and John Thomas in Duke University. They experimentally produced a collision between two ultra-cold atomic clouds made out of a unitary Fermi gas. During the collision a very sharp and stable density peak at the center of the trap was formed and subsequently evolved into a box-like shape. We demonstrate that we can model the nonlinear dynamics of this collision using a dimensionally reduced quasi-1D form of hydrodynamic equations of motion. The quasi-1D nonlinear hydrodynamics shows near perfect agreement with the experiment and we see a clear evidence of shock wave formation which is a hallmark of nonlinear physics.
Host: Andrey Chubukov
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