CP-violating CFT and trace anomaly

Details CP-violating CFT and trace anomaly CP-violating CFT and trace anomaly

2012-01-17

arxiv.org/abs/1201.3428v2

Physics

High Energy Physics

High Energy Physics - Theory

15 pages, v2: typos corrected, reference and comment added

Scientific paper

It is logically possible that the trace anomaly in four dimension includes the Hirzebruch-Pontryagin density in CP violating theories. Although the term vanishes at free conformal fixed points, we realize such a possibility in the holographic renormalization group and show that it is indeed possible. The Hirzebruch-Pontryagin term in the trace anomaly may serve as a barometer to understand how much CP is violated in conformal field theories.

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