Toward higher spin holography in the ambient space of any dimension

We derive the propagators for HS master fields in the anti-de Sitter space of arbitrary dimension. A method is developed to construct the propagators directly without solving any differential equations. The use of the ambient space, where AdS is represented as a hyperboloid and its conformal boundary as a projective light cone, simplifies the approach and makes a direct contact between boundary-to-bulk propagators and two-point functions of conserved currents.