Stable wormholes in scalar-tensor theories

Stable wormholes in scalar-tensor theories

Abstract We reconsider the issue of whether scalar-tensor theories can admit stable wormhole configurations supported by a non-trivial radial profile for the scalar field. Using a recently proposed effective theory for perturbations around static, spherically symmetric backgrounds, we show that scal...

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Bibliographic Details
Main Authors: Gabriele Franciolini, Lam Hui, Riccardo Penco, Luca Santoni, Enrico Trincherini
Format: Article
Language:English
Published: SpringerOpen 2019-01-01
Series:Journal of High Energy Physics
Subjects:
Classical Theories of Gravity
Effective Field Theories
Spacetime Singularities
Online Access:http://link.springer.com/article/10.1007/JHEP01(2019)221
Description
Summary:Abstract We reconsider the issue of whether scalar-tensor theories can admit stable wormhole configurations supported by a non-trivial radial profile for the scalar field. Using a recently proposed effective theory for perturbations around static, spherically symmetric backgrounds, we show that scalar-tensor theories of “beyond Horndeski” type can have wormhole solutions that are free of ghost and gradient instabilities. Such solutions are instead forbidden within the more restrictive “Horndeski” class of theories.
ISSN:1029-8479

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