Seria: Seminarium Zakładu Fizyki Teoretycznej 

Prelegent i afiliacja: Jerzy Kowalski-Glikman (NCBJ and University of Wrocław)

Data: December 11,  2024 (Wednesday),  h. 11:15

Miejsce: room 207 @Pasteura 7

Streszczenie: 

The talk will be divided into three parts. In the first part, I will argue that the consistent quantization of Newtonian interactions necessitates the existence of a massless mediating particle, the graviton. This implies that a quantum theory of gravity could take the form of a Quantum Field Theory (QFT) of spin-2 particles interacting with lower-spin matter, such as that of the Standard Model or beyond. Within the framework of Effective Quantum Field Theory, such a QFT for gravitons must be supplemented by an (as yet unknown) ultraviolet (UV) completion to address challenges like non-renormalizability.

However, this effective field theory cannot serve as a complete description of quantum gravity, as it overlooks the essential ultraviolet/infrared (UV/IR) mixing. In the second part of the talk, I will explore why this mixing is crucial for resolving the cosmological constant problem.

Finally, in the third part, I will provide a brief overview of a novel approach to quantum gravity based on the so-called corner proposal, which is the focus of my current research.