2020/06/06 by Haroldo C. D. Lima Junior, Carolina L. Benone, Luís C. B. Crispino · 1 citation
Physics and Astronomy · #gr-qc
paper · pdf · doi:10.1103/physrevd.101.124009
published as Phys. Rev. D 101 124009 (2020) · 10 pages, 13 figures. Accepted for publication in Physical Review D
arxiv created 2020/06/06 · arxiv updated 2020/06/09
We study the absorption of massless scalar waves in a geometry that interpolates between the Schwarzschild solution and a wormhole that belongs to the Morris-Thorne class of solutions. In the middle of the interpolation branch, this geometry describes a regular black hole. We use the partial wave approach to compute the scalar absorption cross section in this geometry. Our results show that black holes and wormholes present distinctive absorption spectra. We conclude, for instance, that the wormhole results are characterized by the existence of quasibound states which generate Breit-Wigner-like resonances in the absorption spectrum.