Observation of Accelerating Wave Packets in Curved Space

Observation of Accelerating Wave Packets in Curved Space

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We present the first experimental observation of accelerating beams in curved space.More specifically, we demonstrate, experimentally and theoretically, shape-preserving accelerating beams propagating on spherical surfaces: closed-form solutions of the wave equation manifesting music hall mmf-1.3 turntable nongeodesic self-similar evolution.Unlike accelerating beams in flat space, these wave packets sonics empire change their acceleration trajectory due to the interplay between interference effects and the space curvature, and they focus and defocus periodically due to the spatial curvature of the medium in which they propagate.