We review results concerning the θ dependence of 4D SU (N) gauge theories and QCD,
where θ is the coefficient of the CP-violating topological term in the Lagrangian. In particular …

We summarise what lattice simulations have to say about the physical properties of
continuum SU (N) gauge theories in 3+ 1 dimensions. The quantities covered are: the …

We introduce a new smearing transformation, the hypercubic (HYP) fat link. The hypercubic
fat link mixes gauge links within hypercubes attached to the original link only. Using …

We present results from our simulations of quantum chromodynamics with four flavors of
quarks: u, d, s, and c. These simulations are performed with a one-loop Symanzik improved …

We study the θ dependence of four-dimensional SU (N) gauge theories, for N⩾ 3 and in the
large-N limit. We use numerical simulations of the Wilson lattice formulation of gauge …

We compute the topological susceptibility for the SU (3) Yang-Mills theory by employing the
expression of the topological charge density operator suggested by Neuberger's fermions. In …

Nonperturbative Wilson coefficients of the operator product expansion (OPE) for the spin-0
glueball correlators are derived and analyzed. A systematic treatment of the direct instanton …

We evaluate a number of new instanton-induced phenomena in QCD, starting with static
dipole-dipole potentials, and proceeding to quark-quark and dipole-dipole scattering at high …

The chiral properties of lattice fermions can be improved by altering either their fermion-
gauge coupling or the pure gauge part of the action (or both). Using both perturbation theory …

We explore the properties of low lying eigenmodes of fermions in the quenched
approximation of lattice QCD. The fermion action is a recently proposed overlap action and …