Physics – Condensed Matter – Superconductivity
Scientific paper
2010-03-06
Phys.Rev.Lett.104:097003,2010
Physics
Condensed Matter
Superconductivity
4 pages, 2 figures, LaTeX
Scientific paper
We argue that the vacuum polarization by the virtual electron-positron pairs
can be measured by studying a Josephson junction in a strong magnetic field.
The vacuum polarization results in a weak dependence of the Josephson constant
on the magnetic field strength which is within the reach of the existing
experimental techniques.
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