Quantum excitations of static charges in the Ginzburg-Landau model of superconductivity
arXiv:2208.09114 · doi:10.1103/PhysRevB.106.174508
Abstract
We point out that in superconductors there may exist localized quantum excitations of the electric and condensate fields surrounding a static charge, which cannot be interpreted as simply the ground state of the screened charge plus some number of massive photons. This is illustrated via a lattice Monte Carlo calculation of the energy spectrum of a pair of separated static charges in an effective Ginzburg-Landau model of superconductivity.
8 pages, 8 figures