Regular Article - Theoretical Physics
Geodesic congruences in modified Schwarzschild black holes
Department of Physics, School of Science, Jiangsu University of Science and Technology, 212003, Zhenjiang, China
Accepted: 25 September 2022
Published online: 11 October 2022
We investigate two different kinds of modified Schwarzschild black holes: A regularized Schwarzschild black hole and a quantum deformed Schwarzschild black hole. We study the geodesics and geodesic congruences in these two modified Schwarzschild black holes. In particular, we calculate the expansion of radial timelike and null geodesic congruences. Based on these results, we discuss some similarities and differences between these two kinds of modified Schwarzschild black holes.
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