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SO(10) and the invisible axion

G. Lazarides

  • The Rockefeller University, New York, New York 10021

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Phys. Rev. D 25, 2425 – Published 1 May, 1982

DOI: https://doi.org/10.1103/PhysRevD.25.2425

Abstract

We study the Dine, Fischler, and Srednicki mechanism for solving the strong CP problem in the context of the SO(10) unified gauge theory. We find that this mechanism can be implemented in a minimally extended SO(10) model, where the SO(10) symmetry breaks down to SU(3)×SU(2)×U(1) via SU(5). The resulting theory is consistent with the standard hot-big-bang cosmology and with present phenomenology. We also show that, in other minimally extended SO(10) models, where SO(10) breaks down to SU(3)×SU(2)×U(1) either directly or via SU(4)×SU(2)×SU(2), the Dine, Fischler, and Srednicki mechanism cannot be implemented.

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Outline

Information

Phys. Rev. D 25, 2425– Published 1 May, 1982
  • Received 20 November 1981

© 1982 American Physical Society

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