Gravitational anomalies in a dispersive approach

Details Gravitational anomalies in a dispersive approach Gravitational anomalies in a dispersive approach

2000-03-20

arxiv.org/abs/hep-th/0003172v1

Phys.Lett. B480 (2000) 200-206

Physics

High Energy Physics

High Energy Physics - Theory

10 pages

Scientific paper

10.1016/S0370-2693(00)00350-6

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 $m \to 0$.

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