Recent insights into the structure of matter from lattice quantum chromodynamics

Speaker: Prof. Krzysztof Cichy
Affiliation: Faculty of Physics, Adam Mickiewicz University in Poznań, Poznań, Poland

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In this talk, we will discuss the recent investigations of matter at the most fundamental level, coming from numerical simulations of the theory of strong interactions, quantum chromodynamics (QCD), formulated on the lattice and simulated on world’s most powerful supercomputers. We will concentrate on two threads of this research. The first one will be the inner structure of the nucleon, the particle that makes up almost all the mass of the visible Universe. Even though the nucleon plays such a basic role, we know surprisingly little about its internal dynamics and there is an emerging theoretical and experimental program to understand it. This program is expected to culminate in the Electron-Ion Collider, the next-generation particle accelerator approved for construction at the Brookhaven National Laboratory. The second thread that we will discuss is at an even more fundamental level and concerns the dependence of the QCD coupling on the energy. This has profound consequences for the properies of the strong interaction and thus, also on the structure of the nucleon and all phenomena resulting from QCD.

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