|VOLUME 92 | ISSUE 1 |
Atomic levels in superstrong magnetic fields and D=2 QED of massive electrons: screening
M. I. Vysotsky
Institute for theoretical and experimental physics, Moscow, Russia
The photon polarization operator in superstrong magnetic fields
induces the dynamical photon «mass» which leads to screening of
Coulomb potential at small distances , m is the mass
of an electron. We demonstrate
that this behaviour is qualitatively different from the case of
D=2 QED, where the same formula for a polarization operator
leads to screening at large distances as well. Because of screening the
ground state energy of the hydrogen atom at the magnetic fields has the finite value .
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