Instability of static semiclosed worlds in generalized Galileon theories

We consider generalized Galileon theories within general relativity in four-dimensional spacetime. We provide the argument showing that the generalized Galileons described by a wide class of Lagrangians do not admit stable, static, spherically symmetric semiclosed worlds. We also show that in a clas...

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Bibliographic Details
Published in:Physical review. D 2017-07, Vol.96 (2), Article 024030
Main Authors: Evseev, O. A., Melichev, O. I.
Format: Article
Language:English
Subjects:
Flux density
Relativity
Stability
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Summary:We consider generalized Galileon theories within general relativity in four-dimensional spacetime. We provide the argument showing that the generalized Galileons described by a wide class of Lagrangians do not admit stable, static, spherically symmetric semiclosed worlds. We also show that in a class of theories with p⊥=−ρ (where p⊥ is transverse pressure and ρ is energy density), semiclosed worlds, if they exist, would be observed as objects of negative mass.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.96.024030