Axion as a CDM component

Details Axion as a CDM component Axion as a CDM component

2007-11-12

arxiv.org/abs/0711.1708v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages with 11 figures. Based on talks at Lepton-Photon 2007 and APPC10

Scientific paper

I discuss the essential features of the QCD axion: the strong CP solution and
hence its theoretical necessity. I also review the effects of the QCD axion on
astrophysics and cosmology, in particular with emphasis on its role in the dark
matter component together with its supersymmetric partner axino. It is pointed
out that string theory may or may not give a detectable QCD axion.

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