Volume 133, Number 4, February 2021
|Number of page(s)||5|
|Published online||31 March 2021|
Quantum tunneling from a Bardeen black hole
Department of Physics, Jimei University - 361021, Xiamen, Fujian Province, PRC
Received: 19 December 2020
Accepted: 27 January 2021
The tunneling probability of a Schwarzschild black hole is ill-defined, if the second-order WKB approximation is considered. In this letter, the second-order tunneling probability of a Bardeen black hole is carefully investigated, and it is found to be regularized by the magnetic charge q. When the black hole entropy is maintained to be non-negative and monotonic increasing, the magnetic charge is restricted by $0.23<q\leq 0.7$ . The minimal probability refers to such a transition that the final state is a black hole remnant of Planck length.
PACS: 04.70.Dy – Quantum aspects of black holes, evaporation, thermodynamics / 04.70.-s – Physics of black holes / 04.60.-m – Quantum gravity
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