LIO International Conference on "Asymptotic safety in Quantum Field Theory: Grand Unification"

Contribution List

1. Welcome and introduction

6/5/24, 9:15 AM

2. Phenomenology with trans-Planckian asymptotic safety

Kamila Kowalska

6/5/24, 9:30 AM

I will discuss some of the phenomenological aspects of embedding the Standard Model and/or models of New Physics in the framework of trans-Planckian asymptotic safety. In this setting, the presence of an interactive UV fixed point in the renormalization group flow of the gauge and Yukawa couplings imposes boundary conditions at the Planck scale. In the case of New Physics models, the ensuing...

3. Naturally small neutrino mass from asymptotic safety

Enrico Sessolo

6/5/24, 11:00 AM

I will discuss the possibility of dynamically generating arbitrarily small Yukawa couplings in the framework of trans-Planckian asymptotic safety. This effective mechanism may provide an interesting alternative to other dynamical means to generate small neutrino masses, e.g., the see-saw mechanism, and can be applied to various new physics scenarios requiring feeble Yukawa interactions...

11. (Remote) On the many natures of the Higgs: From Composite Higgs Dynamics to the Standard Model as Magnetic Theory

Francesco Sannino

6/5/24, 1:30 PM

4. UV-Completion Beyond Asymptotic Safety: Vainshtein Screening, UV/IR Mixing & Electroweak Naturalness

Dr Florian NORTIER (CNRS/IN2P3 - IP2I Lyon)

6/5/24, 3:00 PM

If one could probe sub-Planckian length scales by a hard (UV) scattering experiment, one would expect to end up with an extended semi-classical state (black hole) that decays into many soft (IR) quanta by Hawking radiation. This UV/IR mixing in gravity (dubbed classicalization) is a deeply nonlocal phenomenon. It suggests a path towards UV-completion by UV-obstruction, different from the...

5. Dualities in the UV

Borut Bajc

6/6/24, 9:30 AM

6. Asymptotic Grand Unification in 5 dimensions

Giacomo Cacciapaglia (IP2I Lyon)

6/6/24, 11:00 AM

7. Orbifold Stability of Asymptotic GUTs

Anca Preda

6/6/24, 2:00 PM

13. Directions for Model Building beyond Asymptotic Freedom

Daniel Litim (University of Sussex)

6/6/24, 3:00 PM

It is widely appreciated that the Standard Model is incomplete. Yet, and despite of significant experimental efforts, clear-cut signatures for new physics are unavailable. Also, theory guidance beyond the paradigms of asymptotic freedom or effective theories is scarce.

In this talk, I discuss top-down and bottom-up directions for model building. From a bottom-up perspective, it is proposed...

12. Musings on horizontal gauge symmetries

Luc Darme

6/7/24, 9:30 AM

9. Interplay of chiral transitions in the standard model

Richard Schmieden

6/7/24, 11:00 AM

We investigate nonperturbative aspects of the interplay of chiral transitions in the standard model in the course of the renormalization flow. We focus on the chiral symmetry breaking mechanisms provided by the QCD and the electroweak sectors, the latter of which we model by a Higgs-top-bottom Yukawa theory. The interplay becomes quantitatively accessible by accounting for the...

10. Safety, Criticality and Large N

Shahram Vatani (GGI Firenze)

6/7/24, 2:00 PM

I will discuss new RG relations obtained from studying the critical exponent in d dimension. As an example, I will apply those results to the Large Nf paradigm before discussing higher order corrections.

8. (remote) Standard Model from low-scale E8 grand unification in ten dimensions

Roman Pasechnik

The construction and general implications of a model with complete supersymmetric unification of the Standard Model matter content, interactions and families' replication into a single E8 gauge superfield in ten dimensions is presented. The gauge and extended Poincaré symmetries are broken through compactification of the T6/Z3xZ3 orbifold with Wilson lines, which reduces the original symmetry...