Light deflection by a quantum improved Kerr black hole pierced by a cosmic string

Kimet Jusufi, Ali Ovgun

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

In this work, we calculate the quantum correction effects on the deflection of light in the space-time geometry of a quantum improved Kerr black hole pierced by an infinitely long cosmic string. More precisely, we calculate the deflection angle by applying the Gauss-Bonnet theorem (GBT) to the osculating optical geometries related to the quantum improved rotating black hole in the weak limit approximation. We find that the deflection angle of light is affected by the quantum effects as well as the global topology due to the presence of the cosmic string. Besides, we have managed to find the same expression for the deflection angle in leading order terms using the geodesic equations.

Original languageEnglish
Article number1950116
JournalInternational Journal of Geometric Methods in Modern Physics
Volume16
Issue number8
DOIs
StatePublished - 1 Aug 2019
Externally publishedYes

Keywords

  • Gauss-Bonnet theorem
  • Gaussian optical curvature
  • Quantum corrections
  • light deflection

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