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Characterizing black hole metrics in quadratic gravity
- Source :
- Phys. Rev. D 99, 101501 (2019)
- Publication Year :
- 2019
-
Abstract
- The recent discovery of non-Schwarzschild black hole spacetimes has opened new directions of research in higher-derivative gravitational theories. However, despite intense analytical and numerical efforts, the link with the linearized theory is still poorly understood. In this work we address this point for the Einstein-Weyl Lagrangian, whose weak field limit is characterized by the standard massless graviton and a spin-2 ghost. We show that the strength of the Yukawa term at infinity determines the thermal properties of the black hole and the structure of the singularity near $r=0$. Moreover, inspired by recent results in the Asymptotic Safety scenario we investigate the consequences of an imaginary ghost mass. In this case we find a countable set of solutions all characterized by spatial oscillations of typical wavelength determined by the mass of the spin-2 field.<br />Comment: 5 pages, 6 figures
- Subjects :
- General Relativity and Quantum Cosmology
High Energy Physics - Theory
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. D 99, 101501 (2019)
- Publication Type :
- Report
- Accession number :
- edsarx.1903.08759
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevD.99.101501