The confined gluon: glueball spectroscopy in the full QCD vacuum

• Applicant: Dr. Stefan Schaefer
• Subject Area: Nuclear and Elementary Particle Physics, Quantum Mechanics, Relativity, Fields
• Term: since 2021
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 451886959

Glueballs are difficult to detect particles which are thought to be primarily made of gluons. Using lattice gauge theory, their properties can be computed in a world without quarks, where only gluons interact with themselves. Once quarks are added, this turns out to be very difficult. The aim of this project is to make progress in this direction. To simplify the problem, we will study a theory where the quarks are heavier than in nature. Since this is still difficult enough, the focus of the project is on developing, investigating, and employing novel algorithms to tackle this problem. In particular, we will use multilevel sampling and study new variance reduction techniques to improve the efficiency of the Monte Carlo methods used in lattice gauge theory.

• DFG Programme: Research Units
• Subproject of: FOR 5269: Future methods for studying confined gluons in QCD
• International Connection: Ireland
• Cooperation Partner: Professor Dr. Michael Peardon