2026/04/08(Wed) 11:00 -12:00 五樓第一會議室 5F, 1st Meeting Room
Title
Parton distributions from Hamiltonian lattice gauge theory with tensor networks
Speaker
Manuel Schneider 博士 (國立陽明交通大學) Dr. Manuel Schneider (National Yang Ming Chiao Tung University)Abstract
The rich internal structure of hadrons is encoded in partonic functions, such as parton distribution functions (PDFs) and light-cone distribution amplitudes (LCDAs), which are crucial in collider experiments and decay processes. Calculating them from first principles remains a major challenge: they require matrix elements with a Wilson line along a light-like direction, which are not directly accessible in the Euclidean lattice formulation underlying conventional Monte Carlo simulations. In contrast, the Hamiltonian formalism allows for a direct treatment of light-cone dynamics. We developed a framework to extract light-cone matrix elements in Minkowski space and demonstrate the approach in the massive Schwinger model. I give an introduction to tensor network states and Hamiltonian lattice gauge theory in this context. Our calculations led to PDFs and LCDAs of the Schwinger model for different fermion masses with controlled uncertainties, demonstrating the feasibility of tensor networks for dynamical calculations in gauge theories.
Language
演講語言 (Language): in English