Spectroscopy of the Einstein-Maxwell-Dilaton-Axion black hole
Deyou Chen, Haitang Yang
TL;DR
This paper extends the quantization of black hole entropy and area spectra to Einstein-Maxwell-Dilaton-Axion black holes, demonstrating that these spectra are equally spaced and parameter-independent, using Bohr-Sommerfeld quantization and adiabatic invariance.
Contribution
It introduces a method to quantize the entropy and area spectra of EMDA black holes, extending previous work to include charged and rotating cases.
Findings
Area spectrum is equally spaced.
Entropy spectrum is equally spaced.
Spectra are independent of black hole parameters.
Abstract
The entropy spectrum of a spherically symmetric black hole was derived via the Bohr-Sommerfeld quantization rule in Majhi and Vagenas's work. Extending this work to charged and rotating black holes, we quantize the horizon area and the entropy of an Einstein-Maxwell-Dilaton-Axion (EMDA) black hole via the Bohr-Sommerfeld quantization rule and the adiabatic invariance. The result shows the area spectrum and the entropy spectrum are respectively equally spaced and independent on the parameters of the black hole.
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