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arXiv · 2207.07060

New time-dependent solutions of viable Horndeski gravity

Reza Saadati·Andrea Giusti·Valerio Faraoni·Fatimah Shojai
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Abstract

We generate new spherical and time-dependent solutions of viable Horndeski gravity by disforming a solution of the Einstein equations with scalar field source and positive cosmological constant. They describe dynamical objects embedded in asymptotically FLRW spacetimes and contain apparent horizons and a finite radius singularity that evolve in time in peculiar ways apparently not encountered before in Einstein and "old" scalar-tensor gravity.

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Reza Saadati, Andrea Giusti, Valerio Faraoni, Fatimah Shojai. 2022-07-14. New time-dependent solutions of viable Horndeski gravity. https://doi.org/10.1088/1475-7516%2F2022%2F09%2F067

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