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arXiv · 1912.01869

New solutions of the Ermakov-Pinney equation in curved space-time

Donato Bini·Giampiero Esposito
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Abstract

An Ermakov-Pinney-like equation associated with the scalar wave equation in curved space-time is here studied. The example of Schwarzschild space-time considered in the present work shows that this equation can be viewed more as a model equation, with interesting applications in black hole physics. Other applications studied involve cosmological space-times (de Sitter) and pulse of plane gravitational waves. In all these cases the evolution of the Ermakov-Pinney field seems to be consistent with a rapid blow-up, unlike the Schwarzschild case where spatially damped oscillations are allowed. Eventually, the phase function is also evaluated in many of the above space-time models.

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Donato Bini, Giampiero Esposito. 2019-12-04. New solutions of the Ermakov-Pinney equation in curved space-time. https://doi.org/10.1007/s10714-020-02713-y

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