M-theory on Elliptic Calabi-Yau Threefolds and 6d Anomalies

Abstract

We consider the 8-supercharge 5d su(N) gauge theories from M-theory compactified on elliptic Calabi-Yau threefolds. By matching the triple intersection numbers in the elliptic Calabi-Yau with the 5d Chern-Simons levels, we determine the charged matter contents for these theories. We show that all these 5d theories can be lifted to 6d N = (1, 0) theories while satisfying the anomaly cancellation equations. This suggests that the 5d theories obtained from M-theory compactified on elliptic Calabi-Yau threefolds have a natural 12d description, which as we know is F-theory. Furthermore, we compute the Euler characteristics of the elliptic Calabi-Yau threefolds.

37 pages + Appendices, 3 Tables, 7 Figures; v2 typo corrected

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