Observation of shock waves in a strongly interacting Fermi gas

Details Observation of shock waves in a strongly interacting Fermi gas Observation of shock waves in a strongly interacting Fermi gas

2010-12-13

arxiv.org/abs/1012.2885v1

Phys. Rev. Lett. 106: 150401 (2011)

Physics

Condensed Matter

Quantum Gases

Scientific paper

10.1103/PhysRevLett.106.150401

We study collisions between two strongly interacting atomic Fermi gas clouds. We observe exotic nonlinear hydrodynamic behavior, distinguished by the formation of a very sharp and stable density peak as the clouds collide and subsequent evolution into a box-like shape. We model the nonlinear dynamics of these collisions using quasi-1D hydrodynamic equations. Our simulations of the time-dependent density profiles agree very well with the data and provide clear evidence of shock wave formation in this universal quantum hydrodynamic system.

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