论文标题
轴承微量簇中的玻璃体凝结的松弛时间
Relaxation times for Bose-Einstein condensation in axion miniclusters
论文作者
论文摘要
我们研究了在引力和自身互动的存在下标量暗物质的bo骨凝结。重力结合的微量簇或暗物质晕圈中的轴轴和其他标量暗物质预计将凝结成称为玻色恒星的Bose-Einstein冷凝物。已证明这一过程是通过类似轴突的粒子的有吸引力的自我互动或通过田地的自我引力而发生的。我们表明，在标量暗物质的高占用状态下，玻尔兹曼碰撞积分并不描述引力或自我相互作用，并得出了对这些相互作用有效的动力学方程。我们使用这种形式主义来计算Bose-Einstein凝结的松弛时间，并发现在宇宙的寿命内可能发生凝结成玻色的恒星。仅当自我互动非常强大时，它们就会减少冷凝时间。
We study the Bose condensation of scalar dark matter in the presence of both gravitational and self-interactions. Axions and other scalar dark matter in gravitationally bound miniclusters or dark matter halos are expected to condense into Bose-Einstein condensates called Bose stars. This process has been shown to occur through attractive self-interactions of the axion-like particles or through the field's self gravitation. We show that in the high-occupancy regime of scalar dark matter, the Boltzmann collision integral does not describe either gravitaitonal or self-interactions, and derive kinetic equations valid for these interactions. We use this formalism to compute relaxation times for the Bose-Einstein condensation, and find that condensation into Bose stars could occur within the lifetime of the universe. The self-interactions reduce the condensation time only when they are very strong.
