Non-perturbative renormalization of local operators in lattice QCD

Lattice QCD provides a framework for performing numerical simulations of quantum chromodynamics. In lattice QCD—as a step towards obtaining quantities which can be compared with experiment—it is in general necessary to determine renormalization factors for the operators being studied. In this master thesis, the renormalization factors for several local operators are determined non-perturbatively in lattice QCD, by utilizing the RI'–MOM scheme. Numerical simulations are performed for a wide range of quark masses which allow for the chiral limit to be taken. As an essential step in the calculation, a subtraction of leading lattice artifacts is performed by utilizing (boosted) lattice perturbation theory at one loop. The final renormalization factors are presented in the RGI scheme, for several values of the inverse coupling: ß = 5.20, 5.30 and 5.50