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Since the 1970s, black holes were understood to be thermodynamic systems. In this talk I will give an introductory review on this subject, and discuss some unresolved issues, such as: What does the entropy of black holes really measure? Can it help us to understand gravitational entropy in general? Is information lost in black hole? Is black hole thermodynamics related to spacetime singularity? Is singularity really resolved in quantum gravity? The talk will be mostly conceptual without much technical details.
Prof. Yen Chin Ong obtained his B.Sc and M.Sc degrees in Mathematics from the National University of Singapore, and his Ph.D in astrophysics at National Taiwan University.
He is currently a member of the Center for Gravitation and Cosmology at Yangzhou University. He obtained the NSFC Excellent Young Scholars Fund as well as the Jiangsu Specially-Appointed Professorship in 2019.
His main research direction is theoretical black hole physics, especially in the context of black hole thermodynamics and Hawking radiation. He has also worked on theoretical cosmology, quantum gravity phenomenology, and modified gravity theories.