13,321 research outputs found
Spontaneous decay of an excited atom placed near a rectangular plate
Using the Born expansion of the Green tensor, we consider the spontaneous
decay rate of an excited atom placed in the vicinity of a rectangular plate. We
discuss the limitations of the commonly used simplifying assumption that the
plate extends to infinity in the lateral directions and examine the effects of
the atomic dipole moment orientation, atomic position, and plate boundary and
thickness on the atomic decay rate. In particular, it is shown that in the
boundary region, the spontaneous decay rate can be strongly modified.Comment: 5 pages, 5 figure
An improved bound for the Gaussian concentration inequality
In this note, we provide an improved bound for the Gaussian concentration
inequality. Our proof is short and bases on the integration-by-parts formula
for the gaussian measure.Comment: 4 page
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