Abstract
Electromagnetic scattering is treated as a dynamical problem, by equating the external torque exerted by the incident wave on the sphere to the self torque due to the radiated (scattered) wave. ForI mech=0,our scattering amplitude is equal to the usualP-wave amplitude of the electromagnetic scattering on an infinitely conducting sphere. The poles of the scattering amplitude, in particular their dependence onI mech, are studied. For example, a pole on the positive imaginary axis, which usually corresponds to a bound state, corresponds to a runaway solution in our case. Non-decaying resonances are also discussed.
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Daboul, J., Jensen, J.H.D. Electromagnetic scattering as a radiation reaction problem. Z. Physik 265, 479–486 (1973). https://doi.org/10.1007/BF01391803
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DOI: https://doi.org/10.1007/BF01391803