Speaker:Â Â Nora Brambilla, Technical University of Munich
   Title: Nonrelativistic bound states with Effective Field Theories
    Abstract: Nonrelativistic bound states lie at the core of quantum physics,     permeating the fabric of nature across diverse realms, spanning particle     to nuclear physics, and from condensed matter to astrophysics. These     systems are pivotal in addressing contemporary challenges at the forefront     of particle physics. Characterized by distinct energy scales, they serve     as unique probes of complex environments. Historically, their     incorporation into quantum field theory was fraught with difficulty until     the emergence of nonrelativistic effective field theories (NREFTs).
    In this talk, we delve into the construction of a potential NREFT     (pNREFT), a framework that directly tackles bound state dynamics     reimagining quantum mechanics from field theory.     Focusing on heavy quarkonia, pNRQCD facilitates systematic definitions and     precise calculations for high-energy collider observables. At the cutting     edge, we investigate nonrelativistic bound states in intricate     environments, like the newly discovered exotics X, Y, Z above the strong     decay threshold and the behavior in out-of-equilibrium scenarios, such as     quarkonium suppression in a Quark Gluon Plasma or dark matter interactions     in the early universe.
    Our ability to achieve precision calculations and control strongly     interacting systems is closely linked to bridging perturbative methods     with nonperturbative tools, notably numerical lattice gauge theories.