Universität Potsdam Institut für Physik KarlLiebknechtStr. 24/25 14476 PotsdamGolm 



AbstractThe aim of this paper is to revisit the calculation of atomsurface quantum friction in the quantum field theory formulation put forward by Barton [New J. Phys. 12 (2010) 113045]. We show that the power dissipated into field excitations and the associated friction force depend on how the atom is boosted from being initially at rest to a configuration in which it is moving at constant velocity (v) parallel to the planar interface. In addition, we point out that there is a subtle cancellation between the onephoton and part of the twophoton dissipating power, resulting in a leading order contribution to the frictional power which goes as v^{4}. These results are also confirmed by an alternative calculation of the average radiation force, which scales as v^{3}. file generated: 28 Nov 2016


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