标题： 轴子来自墙的衰变 显示英文标题

标题： Axions from wall decay

摘要： 我们讨论由弦束缚的轴子墙的衰变，并展示该衰变过程的数值模拟。 在这些模拟中，衰变立即发生，时间尺度为光行时间的数量级，辐射出的轴子的平均能量为$<\omega_a > \simeq 7 m_a$对于$v_a/m_a\simeq 500$。 发现$<\omega_a>$随$\ln(v_a/m_a)$大致呈线性增加。 这种行为的外推得到轴子模型感兴趣的$<\omega_a> \simeq 60 m_a$。 显示英文摘要

摘要： 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.