The large-charge expansion for Schrödinger systems

@article{Favrod2018TheLE,
  title={The large-charge expansion for Schr{\"o}dinger systems},
  author={Samuel Favrod and D. Orlando and S. Reffert},
  journal={Journal of High Energy Physics},
  year={2018},
  volume={2018},
  pages={1-19}
}
A bstractIn this note, we perform the large-charge expansion for non-relativistic systems with a global U(1) symmetry in 3 + 1 and 2 + 1 space-time dimensions, motivated by applications to the unitary Fermi gas and anyons. These systems do not have full conformal invariance, but are invariant under the Schrödinger group. Also here, the low-energy physics is encoded by a Goldstone boson which is due to the breaking of the global symmetry when fixing the charge. We find that in 2 + 1 dimensions… Expand
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