Title : Quantum Chaos: Why and how?
일시 : 2025년 12월 2일 (화), 17시
장소 : 아산이학관 433호
Speaker : 김근영 (GIST)
Abstracts:
Quantum chaos explores how the universal signatures of chaos emerge in quantum systems, even in the absence of the trajectories and sensitivity to initial conditions that define classical chaos. It provides a framework for understanding thermalization, entanglement dynamics, and the scrambling of information in many-body systems. In this talk, I will address two central questions: Why quantum chaos is important and how it can be identified. I will discuss motivations ranging from condensed matter physics to quantum gravity, emphasizing its role in connecting quantum information, statistical mechanics, and black hole physics. I will also introduce some of the key tools — such as spectral statistics, out-of-time-order correlators, and operator/state complexity — that physicists use to diagnose signatures of chaos in quantum theory. My aim is to present a broad conceptual overview that highlights both the significance and the methods of studying quantum chaos.