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Abstract:
Black holes are among the most fascinating and perplexing objects in physics. They are indirectly observed as stellar-mass dark objects in binary systems or as supermassive entities at the centers of galaxies. Some of the most energetic emissions in the universe are associated with matter accreting onto black holes or with black hole mergers. Theoretically, black holes serve as laboratories for thought experiments, allowing us to generate and test new theoretical ideas. From this perspective, the study of black holes has provided key insights into the nature of gravity and its interplay with quantum mechanics. In this talk, I will review some of these insights, focusing on recent advances related to Hawking’s seminal work on black hole radiance and the associated information paradox, which continues to inspire (and confuse) researchers in the field.
Short Bio:
My present research can roughly be categorised into two broad topics. The first topic, “Quantum Spacetime and Quantum Information”, revolves around a paradigm-shift called the holographic duality that has led to insights about the quantum description of gravity in general and has in recent years given rise to new cross-disciplinary connections between gravitational physics and quantum information theory. I have contributed to this topic by working on, e.g., the island formula, complexity, and black hole thermodynamics. A tool that I have often used in this context is semi-classical two-dimensional dilaton gravity. The other topic, “Non-Lorentzian Geometry and Holography”, deals with exploring novel corners of holography and geometry. I contributed most recently to the understanding of so-called Carrollian field theory and gravity, a peculiar limit of the Poincaré group that is extremely relevant for the quest of understanding flat space holography.
Alternative online link: https://meeting.tencent.com/dm/uV92c3h3HvOf
ID: 272917859 Password：123456
Prof. Xiaogang He