Josephson effect, and gravity

Restoration of Lorentz invariance in Josephson junctions in the absence of external electric potentials utilizes any present external scalar potential field. Applied to Newtonian gravitation yields a gravitational Josephson frequency. However, as it turns out, though theoretically interesting, in mostly all practical cases, with one possible exception this frequency is undetectably low, such that no application is in sight. The exception concerns the possible check of devitations from Newton's law on small scales by performing an experiment in free space on the ISS.

@article{id2709,
  author = {Treumann, R.A. and Baumjohann, Wolfgang},
  journal = {Frontiers in Physics},
  language = {en},
  note = {Brief Research Report},
  title = {Josephson effect, and gravity},
  year = {2021},
}

%O Journal Article
%A Treumann, R.A.
%A Baumjohann, Wolfgang
%J Frontiers in Physics
%G en
%O Brief Research Report
%T Josephson effect, and gravity
%D 2021