One Flavour QCD as an analogue computer for SUSY

by J Tobias Tsang (CP3-Origins, The University of Southern Denmark)

Tuesday 29 Mar 2022, 16:00 → 18:00 Europe/Zurich

On-line (CERN)

We numerically study QCD with a single quark flavour on the lattice
probing predictions from effective field theories that are equivalent
to minimal super-symmetric Yang-Mills theory in the large 𝑁𝑐 limit.

The hadronic spectrum including excited states is analysed using one
gauge coupling and several physical volumes and fermion masses. We use
the LapH method and also compute disconnected diagrams.
Lattice simulations with an odd number of Wilson fermions give rise to
regions of configuration space with a negative fermionic weight
entailing a sign problem. We perform a detailed analysis on the
spectrum of the Wilson-Dirac operator and report on observed cases of a
negative fermion determinant in our ensembles.