Update of axion CDM energy density

Abstract

We improve the estimate of the axion CDM energy density by considering the new values of current quark masses, the QCD phase transition effect and a possible anharmonic effect.

7 pages, 6 figures. References are added. A factor is corrected

References in corpus (4)

• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• The Cosmological Parameters 2006
• Dimensionless constants, cosmology and other dark matters
• Running coupling at finite temperature and chiral symmetry restoration in QCD

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