Response of a uniformly accelerated Unruh-DeWitt particle detector near a boundary
With the time-dependent perturbation theory,we calculate the response rate of an Unruh-DeWitt particle detector,which is uniformly accelerated in vacuum along a trajectory parallel to a perfectly reflecting boundary.By comparing the results with their counterparts of a detector being inertial or uniformly accelerated in an unbounded vacuum,we discover that the uniformly accelerated motion may induce spontaneous excitation for a de-tector initially in its ground state,and the presence of the boundary may bring in significant revisions to the transi-tion rates of the detector.
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