Optical force acting on strongly driven atoms in free space or modified   reservoirs
  We investigate the quantum dynamics of a moderately driven two-level particle in free space or modified electromagnetic field reservoir. Particularly, we calculate the optical force acting on the radiator in such an environment. We found that the modified environmental reservoir influences significantly the optical force. Very intense driving in free space also modifies the maximal force. 
Mihai A. Macovei
quant-ph physics.atom-ph