Abstract
The intermediate region between the strong and weak coupling expansions of SU(2) lattice gauge theory is analyzed by inverting the strong coupling series of the average plaquette energy E p( J). Taking into account the weak coupling behaviour too, we get Padé approximants for J( E p) valid in the whole physical region. The zeros of p J/p E p are mapped into singularities of E p( J); they occur for complex values of J and give rise to a peak in the specific heat in fair agreement with the Monte Carlo simulation data. The variable E p is further used to analyze the strong coupling expansions for the roughening indicator, the string tension and the mass gap.
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