Abstract: This presentation delves into the profound impacts of massless gluons and (almost) massless neutrinos on the intricate structure of our visible universe. Comprehending nucleons which are the building blocks of the visible universe, including their spin and mass structures governed by gluons, the mediating bosons of the strong interaction, stands as one of the grand challenges in nuclear and particle physics. Additionally, unraveling processes related to the predominance of matter over antimatter in the universe is of fundamental importance, with mysterious neutrinos potentially holding the key to answering this question. My theoretical and computational physics research in these areas, leveraging Lattice Quantum Chromodynamics, aligns with pioneering future experiments like the Electron-Ion Collider (EIC) and the Deep Underground Neutrino Experiment (DUNE). Furthermore, I will discuss an extraordinary effort towards calculating the hadronic structure of massless photons arising from quantum fluctuations, critically important research from theoretical perspective and also to be explored at the EIC. Attendees will gain a deeper appreciation for the essential contributions of these massless particles in shaping the fundamental nature of our universe.
