论文标题
Q-BAL-BALS上级
Q-ball Superradiance
论文作者
论文摘要
Q球是在田间空间中相干旋转的非主孤子。我们表明，由于散射涉及两种耦合模式，这些连贯的旋转可以引起散射波的超高。尽管在散射中保存了粒子数，但两种模式的频率之间的不匹配允许增强入射波的能量和角动量。当Q-ball在真实空间中旋转时，也可能进行额外的旋转超高光，这可以进一步提高增强功能。我们确定了能量和角动量超高的标准。
Q-balls are non-topological solitons that coherently rotate in field space. We show that these coherent rotations can induce superradiance for scattering waves, thanks to the fact that the scattering involves two coupled modes. Despite the conservation of the particle number in the scattering, the mismatch between the frequencies of the two modes allows for the enhancement of the energy and angular momentum of incident waves. When the Q-ball spins in real space, additional rotational superradiance is also possible, which can further boost the enhancements. We identify the criteria for the energy and angular momentum superradiance to occur.
