Global wave parametrices on globally hyperbolic spacetimes

29 Jun 2020 Capoferri Matteo Dappiaggi Claudio Drago Nicolò

In a recent work the first named author, Levitin and Vassiliev have constructed the wave propagator on a closed Riemannian manifold $M$ as a single oscillatory integral global both in space and in time with a distinguished complex-valued phase function. In this paper, first we give a natural reinterpretation of the underlying algorithmic construction in the language of ultrastatic Lorentzian manifolds... (read more)

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