We compute the one-loop gauge and Lorentz anomalies as well as the gauge and Lorentz variant parts of the two-loop β-functions of heterotic type σ-models. The method used in the computation preserves the (1,0) supersymmetry manifest. We discuss the conjectured mechanism for absorbing the gauge and Lorentz variant parts of the two-loop β-functions by redefinition of the torsion. We show that this mechanism works at two loops, provided that the one-loop β-functions vanish.
The Effect Of Gauge And Lorentz Anomalies On The Beta Functions Of Heterotic Sigma Models
GRIGNANI, Gianluca;
1988
Abstract
We compute the one-loop gauge and Lorentz anomalies as well as the gauge and Lorentz variant parts of the two-loop β-functions of heterotic type σ-models. The method used in the computation preserves the (1,0) supersymmetry manifest. We discuss the conjectured mechanism for absorbing the gauge and Lorentz variant parts of the two-loop β-functions by redefinition of the torsion. We show that this mechanism works at two loops, provided that the one-loop β-functions vanish.File in questo prodotto:
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