Anapole scattering zeros are not eigenmodes and require external illumination, while ideal embedded eigenstates are provably unexcitable by external light due to Lorentz reciprocity.
Controlling electromagnetic fields,
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Can a nonradiating mode be externally excited? Nonscattering states vs. embedded eigenstates
Anapole scattering zeros are not eigenmodes and require external illumination, while ideal embedded eigenstates are provably unexcitable by external light due to Lorentz reciprocity.