2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/202515The spatial distribution of the action and energy in the colour fields of flux-tubes is studied in lattice SU(2) field theory for static quarks at separations up to 1 fm. Special attention is paid to the structure of the colour fields associated with an excited flux-tube with E_u symmetry. We compare our results with hadronic string and flux-tube models. Sum rules are used to extract generalised beta-functions, to describe the expected colour field behaviour and to cross check the methods used.27 pages including 11 ps figuresHigh Energy Physics - Latticetext