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Phys Rev Lett. 2011 Feb 25;106(8):081601. doi: 10.1103/PhysRevLett.106.081601. Epub 2011 Feb 22.

Hypercharge flux, exotics, and anomaly cancellation in F-theory grand unification.

Physical review letters

Joseph Marsano

Affiliations

  1. Enrico Fermi Institute, University of Chicago, 5640 S Ellis Ave, Chicago, Illinois 60637, USA.

PMID: 21405563 DOI: 10.1103/PhysRevLett.106.081601

Abstract

We sharpen constraints related to hypercharge flux in F-theory grand unified theories that possess U(1) symmetries and argue that they arise as a consequence of four-dimensional anomaly cancellation. This gives a physical explanation for all restrictions that were observed in spectral cover models while demonstrating that the phenomenological implications for a well-motivated set of models are not tied to any particular formalism.

© 2011 American Physical Society

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