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Paper detail

The wave resolvent for compactly supported perturbations of static spacetimes

In this note, we consider the wave operator $\square_g$ in the case of globally hyperbolic, compactly supported perturbations of static spacetimes. We give an elementary proof of the essential self-adjointness of $\square_g$ and of uniform microlocal estimates for the resolvent in this setting. This provides a model for studying Lorentzian spectral zeta functions which is particularly simple, yet sufficiently general for locally deriving Einstein equations from a spectral Lagrangian.

preprint2022arXivOpen access
Michał WrochnaRuben Zeitoun
math.APmath-phmath.MP
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Michał WrochnaRuben Zeitoun

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