Weak Gravity Conjecture Validation with Photon Spheres of Quantum Corrected AdS-Reissner-Nordstrom Black Holes in Kiselev Spacetime

TL;DR

This paper validates the Weak Gravity Conjecture in quantum-corrected AdS-Reissner-Nordstrom black holes within Kiselev spacetime by analyzing photon spheres and charge-to-mass ratios, confirming its robustness under specific parameters.

Contribution

It demonstrates that the WGC holds in quantum-corrected black holes with certain parameter values, extending its applicability to more complex spacetime configurations.

Findings

WGC is supported for $\,Q > M$ black holes with photon spheres.

Configurations with $\, ext{omega} = -rac{1}{3}$ and $-1$ uphold the WGC.

WGC does not hold for $\, ext{omega} = -rac{4}{3}$, indicating parameter sensitivity.

Abstract

In this study, we investigate the Weak Gravity Conjecture (WGC) in the context of quantum-corrected AdS-Reissner-Nordstrom (AdS-RN) black holes within Kiselev spacetime. Our focus is on photon spheres, which serve as markers for stable and unstable photon spheres. We confirm the validity of the WGC by demonstrating that quantum corrections do not alter the essential charge-to-mass ratio, thereby supporting the conjecture's universality. Our analysis reveals that black holes with a charge greater than their mass ($Q > M$) possess photon spheres or exhibit a total topological charge of the photon sphere (PS = -1), which upholds the WGC. This finding is significant as it reinforces the conjecture's applicability even in the presence of quantum corrections. Furthermore, we examine various parameter configurations to understand their impact on the WGC. Specifically, we find that configurations with $\omega = -\frac{1}{3}$ and $\omega = -1$ maintain the conjecture, indicating that these values do not disrupt the charge-to-mass ratio required by the WGC. However, for $\omega = -\frac{4}{3}$, the conjecture does not hold, suggesting that this particular parameter value leads to deviations from the expected behavior. These results open new directions for research in quantum gravity, as they highlight the importance of specific parameter values in maintaining the WGC. The findings suggest that while the WGC is robust under certain conditions, there are scenarios where it may be challenged, prompting further investigation into the underlying principles of quantum gravity