Article ID Journal Published Year Pages File Type
1852440 Physics Letters B 2016 6 Pages PDF
Abstract

The QCD axion with fafa at an intermediate scale, 109 GeV∼1012 GeV109 GeV∼1012 GeV, seems in conflict with the gravity spoil of global symmetries and may face the axionic domain wall problem. We point out that the string compactifications with an anomalous U(1) gauge symmetry, allowing desirable chiral matter spectra, circumvent these two problems simultaneously.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Nuclear and High Energy Physics
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