Scalar field collapse in Gauss–Bonnet gravity

2017/09/21 by Narayan Banerjee, Tanmoy Paul · 16 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Curvature #Gravitational singularity #Noncommutative and Quantum Gravity Theories #Scalar (mathematics) #Scalar field #Scalar theories of gravitation #Singularity #Singularity theory #f(R) gravity #hep-th

paper · pdf · doi:10.1140/epjc/s10052-018-5615-5

published in The European Physical Journal C 78(2) (Springer Science+Business Media) · 8 pages, 1 figure

arxiv created 2017/09/21 · openalex created_date 2017/10/06 · openalex publication_date 2018/02/01 · arxiv updated 2018/04/04 · openalex updated_date 2026/08/05

Abstract

We consider a “scalar-Einstein–Gauss–Bonnet” theory in four dimension, where the scalar field couples non-minimally with the Gauss–Bonnet (GB) term. This coupling with the scalar field ensures the non-topological character of the GB term. In this scenario, we examine the possibility for collapsing of the scalar field. Our result reveals that such a collapse is possible in the presence of Gauss–Bonnet gravity for suitable choices of parametric regions. The singularity formed as a result of the collapse is found to be a curvature singularity which is hidden from the exterior by an apparent horizon.

Citations

• Unified cosmic history in modified gravity: from F(R) theory to Lorentz non-invariant models
• f(R)theories of gravity
• Examples of Naked Singularity Formation in the Gravitational Collapse of a Scalar Field
• Role of initial data in spherical collapse
• Dark energy in modified Gauss-Bonnet gravity: Late-time acceleration and the hierarchy problem
• Universality and scaling in gravitational collapse of a massless scalar field
• Modified Gauss-Bonnet theory as gravitational alternative for dark energy
• On Continued Gravitational Contraction
• Spherically symmetric collapse of a perfect fluid in f(R) gravity

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• Non-singular collapse scenario from matter–curvature coupling
• Generalized Ellis-Bronnikov wormhole solution in the scalar-Einstein-Gauss-Bonnet 4d gravitational model