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  Unification of flavor, CP, and modular symmetries

Baur, A., Nilles, H. P., Trautner, A., & Vaudrevange, P. K. S. (2019). Unification of flavor, CP, and modular symmetries. Physics Letters B, 795, 7-14. doi:10.1016/j.physletb.2019.03.066.

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Baur, Alexander1, Author
Nilles, Hans Peter1, Author
Trautner, Andreas1, Author
Vaudrevange, Patrick K. S.1, Author
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1external, ou_persistent22              

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 Abstract: Flavor symmetry plays a crucial role in the standard model of particle physics but its origin is still unknown. We develop a new method (based on outer automorphisms of the Narain space group) to determine flavor symmetries within compactified string theory. A picture emerges where traditional (discrete) flavor symmetries, CP-like symmetries and modular symmetries (like T-duality) of string theory combine to unified flavor symmetries. The groups depend on the geometry of compact space and the geographical location of fields in the extra dimensions. We observe a phenomenon of "local flavor groups" with potentially different flavor symmetries for the various sectors of quarks and leptons. This should allow interesting connections to existing bottom-up attempts in flavor model building. (C) 2019 The Author(s). Published by Elsevier B.V.

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 Dates: 2019
 Publication Status: Issued
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 Identifiers: DOI: 10.1016/j.physletb.2019.03.066
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Title: Physics Letters B
Source Genre: Journal
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Publ. Info: North-Holland
Pages: - Volume / Issue: 795 Sequence Number: - Start / End Page: 7 - 14 Identifier: ISSN: 0370-2693
CoNE: https://pure.mpg.de/cone/journals/resource/954925524777