@article{522861,
  author = {Stephen Eckel and Ted Jacobson},
  title = {Phonon redshift and Hubble friction in an expanding BEC},
  year = {2021},
  number = {10},
  month = {2021-03-11 05:03:00},
  publisher = {SciPost Physics},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=931015},
  doi = {https://dx.doi.org/10.21468/SciPostPhys.10.3.064},
  language = {en},
}