Consistent gravitational anomalies for chiral scalars

Details Consistent gravitational anomalies for chiral scalars Consistent gravitational anomalies for chiral scalars

2010-10-09

arxiv.org/abs/1010.1821v1

Physics

High Energy Physics

High Energy Physics - Theory

3 pages, 1 figure, LaTeX, To appear in the Proceedings of the 12th Marcel Grossmann Meeting, Paris (France)

Scientific paper

Starting from the Henneaux-Teitelboim action for a chiral scalar, which generalizes to curved space the Floreanini-Jackiw action, we give two simple derivations of the exact consistent gravitational anomaly. The first derivation is through the Schwinger-DeWitt regularization. The second exploits cohomological methods and uses the fact that in dimension two the diffeomorphism transformations are described by a single ghost which allows to climb the cohomological chain in a unique way.

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