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Scalar scattering by black holes and wormholes

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arxiv 2211.09886 v1 pith:AMXM7A6F submitted 2022-11-17 gr-qc astro-ph.HE

Scalar scattering by black holes and wormholes

Haroldo C. D. Lima Junior , Carolina L. Benone , Lu\'is C. B. Crispino This is my paper
classification gr-qc astro-ph.HE
keywords scatteringblackcrossdifferentialholeregularsectionwormholes
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We study the scattering of monochromatic planar scalar waves in a geometry that interpolates between the Schwarzschild solution, regular black holes and traversable wormhole spacetimes. We employ the partial waves approach to compute the differential scattering cross section of the regular black hole, as well as of the wormhole solutions. We compare our full numerical results with the classical geodesic scattering and the glory approximation, obtaining excellent agreement in the appropriate regime of validity of such approximations. We obtain that the differential scattering cross section for the regular black hole case is similar to the Schwarzschild result. Notwithstanding, the results for wormholes can be very distinctive from the black hole ones. In particular, we show that the differential scattering cross section for wormholes considerably decreases at large scattering angles for resonant frequencies.

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Cited by 3 Pith papers

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