Gaetan Bardy: $O(N)^3$ sextic tensor model: large $N$ limit and RG-flow.

mercredi 17 déc. 2025, 14:00 → 15:00 Europe/Paris

In this talk, I will present a sextic tensor model with interaction terms given by all $O(N)^3$-invariant bubble diagrams. I will construct the large-$N$ limit of this model and show that novel classes of dominant tensor graphs emerge, beyond those present in the $U(N)^3$ case. I will then present the computation of renormalization group fixed points for the higher-dimensional tensor field theory generalization of this model, considering both short-range and long-range propagators, and using a diagrammatic expansion of the vertex function. 

This work is joint with T. Krajewski, T. Muller, and A. Tanasa, based on arXiv:2510.19646 [hep-th].