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Scattering and absorption of massless scalar waves by a ModMax black hole

Arturo Quispe Baptista1,* and M. L. Peñafiel2,3,†

  • *Contact author: aquispeb@fcpn.edu.bo
  • †Contact author: miguelpenafiel@upb.edu
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Phys. Rev. D 112, 024037 – Published 15 July, 2025

DOI: https://doi.org/10.1103/fzf2-qfc5

Abstract

ModMax electrodynamics is a remarkable example of nonlinear electrodynamics that preserves both conformal and duality invariance. When coupled to General Relativity, the resulting black hole solutions introduce a tunable nonlinearity parameter that effectively screens the electromagnetic charge. We study the scattering and absorption of massless scalar waves by a ModMax black hole by applying the partial waves method. We also compute some well-known analytical approximations for the scattering and absorption cross sections and contrast them with the full numerical solution. Our results adequately reproduce those of Maxwell electrodynamics in the appropriate limit and illustrate the effect of the charge screening in ModMax electrodynamics.

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Phys. Rev. D 112, 024037– Published 15 July, 2025
  • Received 9 June 2025
  • Accepted 25 June 2025
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

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