Description:
<jats:p>We investigate the SU(3) Yang Mills theory at small gradient flow time and at short distances. Lattice spacings down to <jats:italic>a</jats:italic> = 0.015 fm are simulated with open boundary conditions to allow topology to flow in and out. We study the behaviour of the action density <jats:italic>E</jats:italic>(<jats:italic>t</jats:italic>) close to the boundaries, the feasibility of the small flow-time expansion and the extraction of the Λ-parameter from the static force at small distances. For the latter, significant deviations from the 4-loop perturbative β-function are visible at α ≈ 0.2. We still can extrapolate to extract <jats:italic>r</jats:italic><jats:sub>o</jats:sub>Λ.</jats:p>