Axions from wall decay

Details Axions from wall decay Axions from wall decay

1998-08-11

arxiv.org/abs/hep-ph/9808302v1

Nucl.Phys.Proc.Suppl. 72 (1999) 99-104

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 7 figures, to be published in the Proc. of the 5th IFT Axion workshop Gainesville FL, Mar 13-15 1998

Scientific paper

10.1016/S0920-5632(98)00510-6

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 $<\omega_a > \simeq 7 m_a$ for $v_a/m_a\simeq 500$. $<\omega_a>$ is found to increase approximately linearly with $\ln(v_a/m_a)$. Extrapolation of this behaviour yields $<\omega_a> \simeq 60 m_a$ in axion models of interest.

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