Abstract
The two-point function of linearized gravitons on de Sitter space is infrared divergent in the standard transverse traceless synchronous gauge defined by k = 0 cosmological coordinates (also called conformal or Poincaré coordinates). We show that this divergence can be removed by adding a linearized diffeomorphism to each mode function, i.e. by an explicit change of gauge. It follows that the graviton vacuum state is well defined and de Sitter invariant in agreement with various earlier arguments.
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