Unruh effect of detectors with quantized center of mass

The Unruh effect is the prediction that particle detectors accelerated through vacuum get excited by apparent presence of radiation quanta -- a fundamental quantum phenomenon in acceleration. Prior treatments effect, presume classically prescribed trajectory, do not account for dynamics detector's center-of-mass. Here, we study more realistic whose center mass quantized degree freedom being an external classical field. We investigate recoil due to emission quanta. Vice versa, also recoil's impact on and excitation detector. find may be relevant experimental signature effect.