Dispersion forces between an atom and a perfectly conducting wedge
  We consider the interaction between an electrically polarizable atom in its fundamental state and a wedge constituted by two semi-infinite perfectly conducting plates. Using a formalism based on a master equation, we compute the dispersion force on the atom for both retarded and non-retarded regimes. 
T. N. C. Mendes, F. S. S. Rosa, A. Tenorio and C. Farina