Cuscuta-Galileon Braneworlds

Abstract

We investigate braneworlds modeled by topological solutions that arise from the so-called Cuscuta-Galileon model. We develop a first order framework and illustrate our procedure with the scalar field having the well-known hyperbolic tangent profile. We find conditions that must be imposed to the parameters of the model in order to have solutions connecting minima of the potential, with the brane constrained to interpolate Minkowski and anti de Sitter geometries. We also find solutions where the brane only interpolates anti de Sitter geometry. In both cases, the gravity sector of the brane is stable against small fluctuations of the metric.

arXiv comment7 pages, 5 figures. To appear in PLB

References in corpus (36)

• An Alternative to Compactification
• Modified Gravity and Cosmology
• 4D Gravity on a Brane in 5D Minkowski Space
• The galileon as a local modification of gravity
• Modulus Stabilization with Bulk Fields
• Generalized G-inflation: Inflation with the most general second-order field equations
• Modeling the fifth dimension with scalars and gravity
• Covariant Galileon
• Dark Energy
• Universal Aspects of Gravity Localized on Thick Branes
• Gravitational Stability and Renormalization-Group Flow
• Supergravity Domain Walls
• Thick brane solutions
• Global topological k-defects
• Braneworld Models of Scalar Fields with Generalized Dynamics
• Palatini $f(R)$ Black Holes in Nonlinear Electrodynamics
• Cuscuton and low energy limit of Horava-Lifshitz gravity
• Thick domain wall spacetimes with and without reflection symmetry
• First-order framework and generalized global defect solutions
• Supersymmetric Domain-Wall World from D=5 Simple Gauged Supergravity
• Localizing gravity on exotic thick 3-branes
• Speedy sound and cosmic structure
• Cosmic acceleration from asymmetric branes
• Thick brane models in generalized theories of gravity
• Hamiltonian analysis of the cuscuton
• A Note on Asymmetric Thick Branes
• Solvable Models of Domain Walls in N=1 Supergravity
• Thick brane in $f(R)$ gravity with Palatini dynamics
• First-order formalism for flat branes in generalized N-field models
• Collision of Domain Walls in asymptotically Anti de Sitter spacetime
• Thick brane structures in generalized hybrid metric-Palatini gravity
• Cuscuton kinks and branes
• Braneworld solutions from scalar field in bimetric theory
• Cuscuta-Galileon cosmology: Dynamics, gravitational "constant"s and the Hubble Constant
• 4D gravity on a BPS brane in 5D AdS-Minkowski space
• New Results For Cuscuton Multi-Field Brane