Quantum Gravity from Causal Dynamical Triangulations

I will describe some key challenges of constructing a theory of quantum gravity beyond perturbation theory, and how they are addressed and resolved by using a lattice formulation in terms of Causal Dynamical Triangulations (CDT).

This will include computability, uniqueness and the (alleged) incompatibility between general relativity and quantum field theory. I will outline the progress made on conceptual and technical problems, new insights on the roles of causal structure, diffeomorphism invariance and "emergence", and a roadmap to making contact with early-universe cosmology. Technicalities will be kept to a minimum, but can be provided on demand. [arXiv: 2501.17972, 2604.05641]

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Speaker: Renate Loll (Radboud University, Nijmegen)

Time: 10:00

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Quantum Gravity from Causal Dynamical Triangulations

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