Closed Timelike Curves in the Galileon Model

Abstract

It has long been known that generic solutions to the nonlinear DGP and Galileon models admit superluminal propagation. In this note we present a solution of these models which also admits closed timelike curves (CTCs). We observe that these CTCs only arise when, according to each observer, there exists some region in which the higher derivative terms are larger than the 2-derivative kinetic term.

16 pages, 2 jpg figures, version published in JHEP (Nov 8) add refs, details and stability analysis

References in corpus (6)

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• Galileon Duality
• Unbraiding the Bounce: Superluminality around the Corner
• When Matter Matters
• Potential-driven Galileon inflation
• Superluminality, Black Holes and Effective Field Theory
• Unification of Galileon Dualities
• Formation of caustics in k-essence and Horndeski theory
• On dark energy models of single scalar field
• Stability of Closed Timelike Curves in a Galileon Model
• Plane waves in the generalized Galileon theory
• Chaotic Inflation and Reheating in Generalized Scalar-Tensor Gravity
• Note on the Stabilities of the Light-like Galileon Solutions
• Emergence of ghosts in Horndeski theory
• Stability of nonsingular cosmologies in Galileon models with torsion. A no-go theorem for eternal subluminality
• Superluminality in dilatationally invariant generalized Galileon theories
• Metric-Affine Formalism of Higher Derivative Scalar Fields in Cosmology
• Higher derivative SVT theories from Kaluza-Klein reductions of Horndeski theory
• Potential-driven Inflation with Disformal Coupling to Gravity
• Healthy Horndeski cosmologies with torsion
• Axial symmetry cosmological constant vacuum solution of field equations with a curvature singularity, closed time-like curves and deviation of geodesics