Past Events
[Zoom Seminar] Tensor Field Theories: Renormalization and Random Geometry (Dr. Nicolas Delporte, Toriumi Unit)
2020-11-30Title: Tensor Field Theories: Renormalization and Random Geometry
Abstract: In the talk, I will share an overview of my research during my PhD thesis. After a practically-minded introduction to renormalization and conformal field theories (CFT), we will see the essential tools developed for tensor models and their large-$N$ expansion. In the second part, I will focus on results of $d>1$ tensor field theories: melonic CFTs, breaking of symmetries. In the last part, we will revive an old approach to study and renormalize an interacting scalar quantum field theory on Galton-Watson random trees, through random walks, which may prove useful for tensor models to escape the melonic large-$N$ limit.
Zoom:
https://oist.zoom.us/j/94081328725?pwd=aFBTdkUvZTdXVU1BYTd6bTUvZHJKdz09
Meeting ID: 940 8132 8725
Passcode: 609087
Faculty Lunchtime Seminar: Quantum Gravity, Quantum Observables, Wilson Loops, and Geometric Flux (Prof. Reiko Toriumi, OIST)
2020-11-10Title: Quantum Gravity, Quantum Observables, Wilson Loops, and Geometric Flux
Abstract: I will brainstorm and introduce you to the type of problems that I tend to think about in quantum gravity. The title suggests some of the key concepts that I will visit in this talk in order to arrive at the recent interesting result that my collaborators and I discovered, namely, the notion of geometric flux in gravity.
Journal club (Riccardo Martini): Boundary graphs in tensor models
2020-10-23We will introduce boundary graphs in tensor models and describe their meaning and construction.