Stealth Ellis wormholes in Horndeski theories
Autor
Bakopoulos, Athanasios
Chatzifotis, Nikos
Erices-Osorio, Cristián R.
Papantonopoulos, Eleftherios
Fecha
2023Resumen
In this work we are revisiting the well studied Ellis wormhole solution in a Horndeski theory motivated from the Kaluza-Klein compactification procedure of the more fundamental higher dimensional Lovelock gravity. We show that the Ellis wormhole is analytically
supported by a gravitational theory with a non-trivial coupling to the Gauss-Bonnet term
and we expand upon this notion by introducing higher derivative contributions of the scalar
field. The extension of the gravitational theory does not yield any back-reacting component
on the spacetime metric, which establishes the Ellis wormhole as a stealth solution in the
generalized framework. We propose two simple mechanisms that dress the wormhole with
an effective ADM mass. The first procedure is related to a conformal transformation of the
metric which maps the theory to another Horndeski subclass, while the second one is inspired
by the spontaneous scalarization effect on black holes.
Fuente
Journal of Cosmology and Astroparticle Physics, 11(2023), 055Link de Acceso
Click aquí para ver el documentoIdentificador DOI
doi.org/10.1088/1475-7516/2023/11/055Colecciones
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