Bianca Dittrich: From spacetime quanta to quantum spacetime
ฝัง
- เผยแพร่เมื่อ 29 ธ.ค. 2024
- (08 novembre 2024/November 08, 2024) Colloque des sciences mathématiques du Québec/CSMQ. www.crmath.ca/....
Bianca Dittrich (Perimeter Institute): From spacetime quanta to quantum spacetime (2024 CAP-CRM Prize Lecture)
Abstract: General relativity taught us that space time is dynamical and quantum theory posits that dynamical objects are quantum. Hence the Newtonian notion of space time as a passive stage where physics takes place needs to be replaced by a notion of quantum space time. Using techniques from topological quantum field theory I will explain how to construct quantizations of geometry that lead to a notion of spacetime quanta. We will then address two key questions: Firstly, how a smooth spacetime could emerge from these spacetime quanta, and secondly whether the dynamics imposed on these spacetime quanta can lead to general relativity in the classical limit.