L. Alvarezconsul et Cp. Martin, GAUGE DEPENDENCE OF THE TOPOLOGICAL SIGMA-MODEL BETA-FUNCTIONS, Physical review. D. Particles and fields, 55(10), 1997, pp. 6596-6599
We compute the dependence on the classical action ''gauge'' parameters
of the beta functions of the standard topological sigma model in flat
space. We thus show that their value is a ''gauge'' artifact indeed.
We also show that previously computed values of these beta functions c
an be continuously connected to one another by smoothly varying those
''gauge'' parameters.