Loop Quantum Schwarzschild Interior and Black Hole Remnant

Speaker: Dr. Zhang Cong (Department of Physics, University of Warsaw, Poland)

Host: Professor Zhang Xiangdong

Report time: 15:00, Wednesday, March 24, 2021

Venue: Lecture Hall, Room 213, 2 / F, Physics Building (Building 18)

Welcome to join us!

School of Physics and Optoelectronics

March 22, 2021

Abstract:

The interior of a Schwarzschild black hole is quantized by the method of loop quantum gravity. The Hamiltonian constraint is solved and the physical Hilbert space is obtained in the model. The properties of a Dirac observable corresponding to the Arnowitt-Deser-Misner mass of the Schwarzschild black hole are studied by both analytical and numerical techniques. It turns out that zero is not in the discrete spectrum of this Dirac observable. This supports the existence of a stable remnant after the evaporation of a black hole. Our conclusion is valid for a general class of schemes adopted for loop quantization of the model.

Brief Introduction of speaker:

Cong Zhang, postdoctoral fellow, Department of Physics, University of Warsaw, Poland. He received his BACHELOR degree in Astronomy from Beijing Normal University in 2013, and his PhD degree in physics from Beijing Normal University in 2019. After that, he went to the Physics Department of Warsaw University for postdoctoral research. His research interests include loop quantum gravity, loop quantum cosmology and loop quantum black hole, and he has published more than 10 SCI papers.