Cloud Screening of Extremal Charged BTZ Black Hole
Published:Dec 30, 2025 22:01
•1 min read
•ArXiv
Analysis
This paper investigates the dynamics of a charged scalar field near the horizon of an extremal charged BTZ black hole. It demonstrates that the electric field in the near-horizon AdS2 region can trigger an instability, which is resolved by the formation of a scalar cloud. This cloud screens the electric flux, leading to a self-consistent stationary configuration. The paper provides an analytical solution for the scalar profile and discusses its implications, offering insights into electric screening in black holes and the role of near-horizon dynamics.
Key Takeaways
- •Investigates the dynamics of a charged scalar field near the horizon of an extremal charged BTZ black hole.
- •Demonstrates an instability in the near-horizon AdS2 region due to the electric field.
- •The instability is resolved by the formation of a scalar cloud.
- •The scalar cloud screens the electric flux, leading to a self-consistent stationary configuration.
- •Provides an analytical solution for the scalar profile and discusses its implications for electric screening.
Reference
“The paper shows that the instability is resolved by the formation of a static scalar cloud supported by Schwinger pair production.”