Collective molecule formation in a degenerate fermi gas via a feshbach resonance

  • Javanainen J
  • Koštrun M
  • Zheng Y
 et al. 
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Abstract

We model collisionless collective conversion of a degenerate Fermi gas of atoms into bosonic molecules via a Feshbach resonance, treating the bosonic molecules as a classical field and seeding the pairing amplitudes with random phases. A dynamical instability of the Fermi sea against association with molecules drives the conversion. The model qualitatively reproduces several experimental observations [Regal et al., Nature (London) 424, 47 (2003)]. We predict that the initial temperature of the Fermi gas sets the limit for the efficiency of atom-molecule conversion.

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Authors

  • Uttam SinghIndian Institute of Technology Mandi

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  • Juha Javanainen

  • Marijan Koštrun

  • Yi Zheng

  • Andrew Carmichael

  • Patrick J. Meinel

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