论文标题
重力对Oscillon寿命的影响
Gravitational effects on oscillon lifetimes
论文作者
论文摘要
许多具有吸引力的自我互动的标量场理论都支持了寿命长，空间局部和时间周期性的字段配置称为oscillons。对其寿命的详细研究对于理解其在宇宙学中的应用至关重要。在本文中，我们研究了对密集旋转的衰减速率和寿命的重力影响，在该距离旋转的速度和寿命中，与重力相互作用相比，自我相互作用更重要或至少同样重要。作为示例，我们考虑了通货膨胀的$α$ aftractor t型t模型和轴突单构模型，在大于最小值的某些特征场距离$ f $之外，在大型场值下，电势变得比二次值平坦。对于具有$ \ mathcal {o}（f）$和$ f \ ll 0.1 m_ \ mathrm {pl} $的字段振幅的oscillons，我们发现它们的进化几乎与忽略重力的情况相同。但是，对于$ f \ sim 0.1 m_ \ mathrm {pl} $，包括重力相互作用会稍微降低生命周期。
Many scalar field theories with attractive self-interactions support exceptionally long-lived, spatially localized and time-periodic field configurations called oscillons. A detailed study of their longevity is important for understanding their applications in cosmology. In this paper, we study gravitational effects on the decay rate and lifetime of dense oscillons, where self-interactions are more or at least equally important compared with gravitational interactions. As examples, we consider the $α$-attractor T-model of inflation and the axion monodromy model, where the potentials become flatter than quadratic at large field values beyond some characteristic field distance $F$ from the minimum. For oscillons with field amplitudes of $\mathcal{O}(F)$ and for $F\ll 0.1 M_\mathrm{pl}$, we find that their evolution is almost identical to cases where gravity is ignored. For $F\sim 0.1 M_\mathrm{pl}$, however, including gravitational interactions reduces the lifetime slightly.
