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...
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...
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.
