Thursday, July 4, 2013

1307.0560 (Angelo Bassi et al.)

Spontaneous photon-emission from a non-relativistic free charged
particle in collapse models: a case-study

Angelo Bassi, Sandro Donadi
We study the photon emission rate of a non relativistic charged particle interacting with an external classical noise through its position. Both the particle and the electromagnetic field are quantized. Under only the dipole approximation, the equations of motion can be solved exactly for a free particle, or a particle bounded by an harmonic potential. The physical quantity we will be interested in is the spectrum of the radiation emitted by the particle, due to the interaction with the noise. We will highlight several properties of the spectrum and clarify some issues appeared in the literature, regarding the exact mathematical formula of a spectrum for a free particle.
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