Scaling in supersymmetric Yang-Mills theory
|Research Area||Plasma & Particle Physics|
|Principal Investigator(s)||Prof.Dr. Gernot Münster|
In recent years supersymmetric theories have aroused increasing interest in elementary particle physics. The supersymmetric extension of the Standard Model with N=1 supercharge is considered to be an interesting candidate for a quantum field theory with phenomenological relevance in the near future. Supersymmetry (SUSY) is an essential ingredient also for other models beyond the Standard Model. In recent years we have investigated the N=1 supersymmetric Yang-Mills theory by means of Monte Carlo calculations on a space-time lattice in order to study the spectrum of low-lying particles, the supersymmetric Ward identities and relevant physical observables. If supersymmetry is unbroken on a non-perturbative level, the particle states are expected to form degenerate supermultiplets in the continuum limit. Our previous results show that part of the low-lying particle states appear to become degenerate near the massless gluino limit, but complete supermultiplets cannot yet be identified. In order to find out whether this is an artifact of the lattice discretisation, we intend to perform numerical simulations on lattices with different lattice spacings and to study the corresponding scaling behaviour of the mass spectrum.