@misc{indiciae3041c2809e9d,
  title = {Quantum excitations in time-dependent backgrounds},
  author = {Kolopanis, Matthew and Vachaspati, Tanmay},
  year = {2013},
  doi = {10.1103/physrevd.87.085041},
  url = {https://www.osti.gov/biblio/1102155},
  note = {Source identifier: 1102155}
}