QCD axion dark matter from long-lived domain walls during matter domination
QCD axion dark matter from long-lived domain walls during matter domination
复制标题
物质支配期间来自长寿命畴壁的 QCD 轴子暗物质
DOI:
10.1016/j.physletb.2018.04.056
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发表时间:
2018
影响因子:
4.4
通讯作者:
Kawasaki, Masahiro
中科院分区:
文献类型:
--
作者:
Harigaya, Keisuke;Kawasaki, Masahiro
The domain wall problem of the Peccei–Quinn mechanism can be solved if the Peccei–Quinn symmetry is explicitly broken by a small amount. Domain walls decay into axions, which may account for dark matter of the universe. This scheme is however strongly constrained by overproduction of axions unless the phase of the explicit breaking term is tuned. We investigate the case where the universe is matter-dominated around the temperature of the MeV scale and domain walls decay during this matter dominated epoch. We show how the viable parameter space is expanded.
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影响因子:
8.6
作者:
M. Turner;M. Turner;F. Wilczek
通讯作者:
F. Wilczek
DOI:
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1987
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1989
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作者:
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通讯作者:
D. Spergel