Analog model of a Friedmann-Robertson-Walker universe in Bose-Einstein condensates: Application of the classical field method

@article{Jain2007AnalogMO,
  title={Analog model of a Friedmann-Robertson-Walker universe in Bose-Einstein condensates: Application of the classical field method},
  author={Piyush Jain and Silke E. Ch. Weinfurtner and Matt Visser and Crispin W. Gardiner},
  journal={Physical Review A},
  year={2007},
  volume={76},
  pages={033616}
}
Analog models of gravity have been motivated by the possibility of investigating phenomena not readily accessible in their cosmological counterparts. In this paper, we investigate the analog of cosmological particle creation in a Friedmann-Robertson-Walker universe by numerically simulating a Bose-Einstein condensate with a time-dependent scattering length. In particular, we focus on a two-dimensional homogeneous condensate using the classical field method via the truncated Wigner approximation… 

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