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arXiv · hep-ph/9808302

Axions from wall decay

S. Chang·C. Hagmann·P. Sikivie
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Abstract

We discuss the decay of axion walls bounded by strings and present numerical simulations of the decay process. In these simulations, the decay happens immediately, in a time scale of order the light travel time, and the average energy of the radiated axions is $<ω_a > \simeq 7 m_a$ for $v_a/m_a\simeq 500$. $<ω_a>$ is found to increase approximately linearly with $\ln(v_a/m_a)$. Extrapolation of this behaviour yields $<ω_a> \simeq 60 m_a$ in axion models of interest.

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S. Chang, C. Hagmann, P. Sikivie. 1998-08-11. Axions from wall decay. https://doi.org/10.1016/s0920-5632(98)00510-6

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