From Cosmology to Cold Atoms: Observation of Sakharov Oscillations in a Quenched Atomic Superfluid

  title={From Cosmology to Cold Atoms: Observation of Sakharov Oscillations in a Quenched Atomic Superfluid},
  author={Chen-Lung Hung and Victor Gurarie and Cheng Chin},
  pages={1213 - 1215}
Tinyverse Quantum many-systems, such superfluids, are difficult to study in equilibrium, and thus understanding their dynamics poses a particular challenge. When the strength of interactions was suddenly changed in a two-dimensional gas of cesium atoms, Hung et al. (p. 1213, published online 1 August; see the Perspective by Schmiedmayer and Berges) observed oscillations in the time and space domains analogous to the peaks in the spectrum of the cosmic microwave background. Abrupt interaction… 

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