A) Lattice gauge theories
Investigation of the quark confinement mechanism and the role of topological
excitations (instantons, monopoles, vortices) in non-abelian lattice
and continuum gauge theories at zero and non-zero temperature.
Computation of the hadronic and glueball spectrum, of quark masses and of moments of
deep-inelastic nucleon structure functions as well as studies of the string breaking
phenomenon within lattice QCD.
Investigations of heavy quark systems within lattice QCD and effective lattice field theories.
Analytic and numerical studies for improved fermion actions in lattice gauge theories.
Algorithmic studies for simulations with dynamical Wilson fermions in lattice QCD.
Computation of gauge-variant Green functions in lattice gauge theories and studies of the Gribov problem.
B) Low-energy properties of QCD and effective hadron theories
Investigation of the chiral and colour superconductivity phase transition of QCD
at non-zero temperature and chemical potential in the presence of
condensate fields within an effective langrangian approach.
Investigation of heavy hadrons and their interactions in the relativistic quark