Gravitational anomalies in a dispersive approach

Abstract

The gravitational anomalies in two dimensions, specifically the Einstein anomaly and the Weyl anomaly, are fully determined by means of dispersion relations. In this approach the anomalies originate from the peculiar infrared feature of the imaginary part of the relevant formfactor which approaches a $\delta$-function singularity at zero momentum squared when $m\to 0$.

10 pages

Cited by in corpus (5)

• The Trace Anomaly and Massless Scalar Degrees of Freedom in Gravity
• Two-dimensional gravitational anomalies, Schwinger terms and dispersion relations
• Arbitrary parameters in implicit regularization and democracy within perturbative description of 2-dimensional gravitational anomalies
• Schwinger terms in two-dimensional gravitation and Kallen's method
• Do anomalies break the momentum routing invariance?