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We first establish the presence of a diffractive front in the fundamentalsolution of the wave operator with a diract delta intial condition in twodimensional euclidean space caused by the potentials perturbation on thespherical laplacian. This motivates a result which restricts the propagation ofsingularities for the wave operator with a more general potential to preciselythese diffractive fronts higher dimensional euclidean spaces. This is provenusing microlocal energy estimates.

Diffractive Theorems for the Wave Equation with Inverse Square Potential