---
res:
  bibo_abstract:
  - "Quantum electrodynamics (QED) is one of the most precisely tested theories in
    the history of science, giving accurate predictions to a wide range of experimental
    observations. Recent experimental advances allow for the ability to probe physics
    on extremely short attosecond timescales, enabling ultrafast imaging of quantum
    dynamics. It is of great interest to extend our understanding of short-time quantum
    dynamics to QED, where the focus is typically on long-time observables such as
    \U0001D446\r\nmatrices, decay rates, and cross sections. That said, solving the
    short-time dynamics of the QED Hamiltonian can lead to divergences, making it
    unclear how to arrive at physical predictions. We present an approach to regularize
    QED at short times and apply it to the problem of free-electron radiation into
    a medium, known as Cherenkov radiation. Our regularization method, which can be
    extended to other QED processes, is performed by subtracting the self-energy in
    free space from the self-energy calculated in the medium. Surprisingly, we find
    a number of previously unknown phenomena yielding corrections to the conventional
    Cherenkov effect that could be observed in current experiments. Specifically,
    the Cherenkov velocity threshold increases relative to the famous conventional
    theory. This modification to the conventional theory, which can be non-negligible
    in realistic scenarios, should result in the suppression of spontaneous emission
    in readily available experiments. Finally, we reveal a bifurcation process creating
    radiation into new Cherenkov angles, occurring in the strong-coupling regime,
    which would be realizable by considering the radiation dynamics of highly charged
    ions. Our results shed light on QED phenomena at short times and reveal surprising
    new physics in the Cherenkov effect.@eng"
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Charles
      foaf_name: Roques-Carmes, Charles
      foaf_surname: Roques-Carmes
      foaf_workInfoHomepage: http://www.librecat.org/personId=e2e68fc9-6505-11ef-a541-eb4e72cc3e82
  - foaf_Person:
      foaf_givenName: Nicholas
      foaf_name: Rivera, Nicholas
      foaf_surname: Rivera
  - foaf_Person:
      foaf_givenName: John D.
      foaf_name: Joannopoulos, John D.
      foaf_surname: Joannopoulos
  - foaf_Person:
      foaf_givenName: Marin
      foaf_name: Soljačić, Marin
      foaf_surname: Soljačić
  - foaf_Person:
      foaf_givenName: Ido
      foaf_name: Kaminer, Ido
      foaf_surname: Kaminer
  bibo_doi: 10.1103/physrevx.8.041013
  bibo_issue: '4'
  bibo_volume: 8
  dct_date: 2018^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/2160-3308
  dct_language: eng
  dct_publisher: American Physical Society@
  dct_title: Nonperturbative quantum electrodynamics in the Cherenkov effect@
...