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Black Hole Scalarization in Gauss-Bonnet Extended Starobinsky Gravity

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arxiv 2004.14395 v2 pith:637RBPJT submitted 2020-04-29 gr-qc hep-th

Hai-Shan Liu , H. Lu , Zi-Yu Tang , Bin Wang This is my paper
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keywords blackholescalarspacetimegauss-bonnethairmassmassive
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We propose a class of higher-derivative gravities that can be viewed as the Gauss-Bonnet extension of the Starobinsky model. The theory admits the Minkowski spacetime vacuum whose linear spectrum consists of the graviton and a massive scalar mode. In addition to the usual Schwarzschild black hole, we use numerical analysis to establish that in some suitable mass range, new black holes carrying the massive scalar hair can emerge. The new black hole serves as a "wall" separating the naked spacetime singularity and wormholes in the parameter space of the scalar hair. Our numerical results also indicate that although the new hairy black hole and the Schwarzschild have different spacetime geometry, their entropy and temperature are same for the same mass.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Black holes and neutron stars in massive Hellings-Nordtvedt theory

    gr-qc 2026-05 unverdicted novelty 7.0 of 10

    In massive Hellings-Nordtvedt theory, a nonzero vector vacuum asymptotically forbids both curvature-vector couplings at once, and the A²R sector yields Schwarzschild-like black holes plus neutron stars that can deviat...

  2. Scalarization of Charged Black Hole in Gauss-Bonnet Extended Starobinsky-Maxwell Gravity

    gr-qc 2026-07 conditional novelty 6.0 of 10

    In Gauss-Bonnet-extended Starobinsky gravity, scalarized black holes form two smoothly joined branches at fixed coupling; adding a Maxwell field can split the family into disconnected branches, and the first law is ch...

  3. Neutron stars more compact than black holes in quasi-topological gravity: Equilibrium configurations and radial stability

    gr-qc 2026-05 unverdicted novelty 6.0 of 10

    Neutron stars in quasi-topological gravity can be more compact than black holes and radially stable across several equations of state.

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