Cancellation of anomalies for four-dimensional heterotic strings in a Lagrangian approach
Ketov S. V. , Kuzenko S. M., Solov'ev O. A.
General conditions for the cancellation of (super-) gravitational and Siegel anomalies are derived for four-dimensional heterotic strings, formulated in a two-dimensional (l,0)-supersymmetric Lagrangian field theory with the help of chiral bosons on cosets.