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.
Saadati, R., Giusti, A., Faraoni, V., Shojai, F. (2022). New time-dependent solutions of viable Horndeski gravity. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2022(09), 0-18 [10.1088/1475-7516/2022/09/067].
New time-dependent solutions of viable Horndeski gravity
Giusti, Andrea;
2022
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
