Global Worldsheet Anomalies from M-Theory

Details Global Worldsheet Anomalies from M-Theory Global Worldsheet Anomalies from M-Theory

2003-10-15

arxiv.org/abs/hep-th/0310147v3

JHEP0408:037,2004

Physics

High Energy Physics

High Energy Physics - Theory

25 pages; v2: minor alterations, references added; v3: various arguments clarified, mathematical background added. Published v

Scientific paper

10.1088/1126-6708/2004/08/037

We present an M-theory proof of the anomaly of Freed and Witten which in general shifts the quantisation law for the U(1) gauge field on a D6-brane. The derivation requires an understanding of how fields on the D6-brane lift to M-theory, together with a localisation formula which we prove using a U(1)-index theorem. We also show how the anomaly is related to the K-theory classification of Ramond-Ramond fields. In addition we discuss the M-theory origin of the D6-brane effective action, and illustrate the general arguments with a concrete example.

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