Energies of four-quark systems calculated by the static quenched SU(2)
lattice Monte Carlo method are analyzed in 2Γ2 bases for square,
rectangle, tilted rectangle, linear and quadrilateral geometry configurations
and in 3Γ3 bases for a non-planar geometry configuration. For small
interquark distances, a lattice effect is taken into account by considering
perimeter dependent terms which are characterized by the cubic symmetry. It is
then found that a parameter f - that can be identified as a gluon field
overlap factor - is rather well described by the form exp(β[bsβEA+bsββFP]), where A and P are the area and
perimeter mainly defined by the positions of the four quarks, bsβ is the
string constant in the 2-quark potentials and E,F are constants.Comment: (19 pages of Latex - 1 page of figures not included - sent on
request). Preprint HU-TFT-94-2