Update of axion CDM energy density
Kyu Jung Bae, Ji-Haeng Huh, Jihn E. Kim
TL;DR
This paper refines the calculation of axion cold dark matter energy density by incorporating updated quark masses, QCD phase transition effects, and anharmonic corrections, leading to more accurate cosmological predictions.
Contribution
It introduces a comprehensive update to axion CDM energy density estimates by including recent quark mass data and phase transition effects, improving previous models.
Findings
More precise axion energy density estimates.
Quantitative impact of QCD phase transition on axion abundance.
Assessment of anharmonic effects on axion cosmology.
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.
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