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Axion fragmentation
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DOI：10.1007/JHEP04(2020)010.png)
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摘要
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We investigate the production of axion quanta during the early universe evolution of an axion-like field rolling down a wiggly potential. We compute the growth of quantum fluctuations and their back-reaction on the homogeneous zero-mode. We evaluate the transfer of kinetic energy from the zero mode to the quantum fluctuations and the conditions to decelerate the axion zero-mode as a function of the Hubble rate, the slope of the potential, the size of the barriers and the initial field velocity. We discuss how these effects impact the relaxion mechanism.
Keyword:
Beyond Standard Model
Cosmology of Theories beyond the SM
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期刊
IF:
5.5
论文数:
4.0W
被引数:
13.7W
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