QCD axion from a higher dimensional gauge field theory

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We point out that a QCD axion solving the strong CP problem can arise naturally from a parity-odd gauge field in five-dimensional (5D) orbifold field theory. The required axion coupling to the QCD anomaly comes from the 5D Chern-Simons coupling, and all other unwanted U(1)(PQ) breaking axion couplings can be avoided naturally by the 5D gauge symmetry and locality. If the fifth dimension is warped, the resulting axion scale is suppressed by a small warp factor compared to the Planck scale, thereby the model can generate naturally an intermediate axion scale f(a)=10(10)-10(12) GeV.
Publisher
AMER PHYSICAL SOC
Issue Date
2004-03
Language
English
Article Type
Article
Keywords

STRONG-CP PROBLEM; PECCEI-QUINN SYMMETRY; INVARIANCE; PHYSICS; CONSERVATION; UNIFICATION; INSTANTONS; HIERARCHY; GRAVITY; MODELS

Citation

PHYSICAL REVIEW LETTERS, v.92, pp.231 - 238

ISSN
0031-9007
DOI
10.1103/PhysRevLett.92.101602
URI
http://hdl.handle.net/10203/80030
Appears in Collection
PH-Journal Papers(저널논문)
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