A class of two-dimensional scale invariant sigma-models on homogeneous spaces is presented. We discuss the symmetry properties of the models and show that they are finite. We compute at two loops the central charge of the Virasoro algebra associated with the energy-momentum tensor.
Scale invariant sigma models on homogeneous spaces
GUADAGNINI, ENORE;
1987-01-01
Abstract
A class of two-dimensional scale invariant sigma-models on homogeneous spaces is presented. We discuss the symmetry properties of the models and show that they are finite. We compute at two loops the central charge of the Virasoro algebra associated with the energy-momentum tensor.File in questo prodotto:
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