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We carry out further analysis of the Hamiltonian approach to Yang-Millstheory in 2+1 dimensions which helps to place the calculation of the vacuumwave function and the string tension in the context of a systematic expansionscheme. The solution of the Schrodinger equation is carried out recursively.The computation of correlators is re-expressed in terms of a two-dimensionalchiral boson theory. The effective action for this theory is calculated tofirst order in our expansion scheme and to the fourth order in a kinematicexpansion parameter. The resulting corrections to the string tension are shownto be very small, in the range -0.3% to -2.8%, moving our prediction closer tothe recent lattice estimates.

The Hamiltonian Approach to Yang-Mills (2+1): An Expansion Scheme and Corrections to String Tension