论文标题
轴心颗粒的oscillons：质量分布和功率谱
Oscillons of Axion-Like Particle: Mass distribution and power spectrum
论文作者
论文摘要
在弦理论中，建议在巨大的质量范围内同时存在许多类似轴突的颗粒（阿尔卑斯山），并且在通货膨胀的背景下已经发展了各种电势。在这种潜力比二次的潜力较浅的情况下，显着的不稳定性可以产生局部密集的物体，即oscillons。由于其绝热不变的近似保守性，俄克斯柱通常很长，也许直到具有$ M \ sim 10^{-22} \ {\ rm ev} $的超轻质阿尔卑斯山的当前年龄。这样的oscillons可以对最近宇宙的演变产生重大影响。在本文中，我们通过经典的晶格模拟研究了纯天然类型电位的oscillons，以探索现象学应用所需的关键量：oscillons的数量密度，Oscillon的质量分布，oscillons与ALP场与ALP场的能量比和功率谱。然后，考虑到分析衰减速率，我们进化了这些值。
In string theory, the simultaneous existence of many Axion-Like Particles (ALPs) are suggested over a vast mass range, and a variety of potentials have been developed in the context of inflation. In such potentials shallower than quadratic, the prominent instability can produce localized dense objects, oscillons. Because of the approximate conservation of their adiabatic invariant, oscillons generally survive quite long, maybe up to the current age of the universe in the case of ultra-light ALPs with $m \sim 10^{-22}\ {\rm eV}$. Such oscillons can have significant effects on the evolution of the recent universe. In this paper, we investigate the oscillons of the pure-natural type potential by classical lattice simulation to explore the key quantities necessary for phenomenological application: the number density of oscillons, the oscillon mass distribution, the energy ratio of oscillons to the ALP field, and the power spectrum. Then, we evolve these values in consideration of the analytic decay rate.
