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QCD sum rules provide an elegant way of accessing non- perturbative physics using the tools of perturbation theory. In this talk I will attempt a relatively self-contained introduction to QCD sum rules using the classic example of pseudoscalar correlators to calculate meson decay constants. I will then discuss some practical ...

In this talk, I explore the concept of compositeness in relation to QFT and argue that there is no satisfactory, exact definition of compositeness. Therefore, we are forced to conclude that all bound states, from pions to people, have the same fundamentality and that the sentence "chairs are made of ...

I will review recent progress on the connections between scattering amplitudes in quantum field theory and the geometry of Amplituhedron, a recently discovered mathematical object which captures particle dynamics of strong interactions. In this picture, the physics problem of predicting the outcomes of particle scattering is reformulated as the mathematical ...

Self-gravitating systems -- such as star clusters, stellar discs, and dark matter halos -- are rich with dynamical phenomena. They exhibit both resonant (long-range) and non-resonant (short-range) dynamics, with unclear transition regimes. The coupling of linear response theory, kinetic theory, quasilinear theory, and N-body approaches for studying self-gravitating systems is now within ...

'Dark matter' (DM) is a dynamical hypothesis born from our inability to comprehend kinematic observations at the galaxy scale and larger using baryonic matter only. Astronomers have struggled with the implications of DM for galaxy formation and evolution for decades. Conversely, we've exploited observations and cosmological simulations to constrain ...

Lattice Field Theories are a mature tool that yields robust predictions for precision tests of the Standard Model and potential BSM candidates. Larger volumes, finer lattice spacings and decorrelated configurations are some of the requirements to tame the systematic errors still affecting the current simulations. Improved algorithms, and strong mathematical ...