论文标题
加重振荡的重力波增强
Enhanced Gravitational Waves from Inflaton Oscillons
论文作者
论文摘要
在广泛的通货膨胀模型中，加速膨胀的周期之后是将通气量标量场分裂为局部，长寿和庞大的oscillon激发。我们证明了oscillons的物质优势，其次是它们的快速衰减，显着增强了原始引力波（GW）光谱。这些由二阶扰动来源的振荡器诱导的GWS与与Oscillon形成相关的先前考虑的GWS相比，频率的频率不同，并且可能低的数量级。我们表明，可检测到的Oscillon诱导的GW特征建立了与宇宙微波背景辐射（CMB）独立的直接测试，用于单构，对数和纯天然和纯天然（高原）潜在的通货膨胀模型的参数空间区域。我们证明，在爱因斯坦望远镜，宇宙资源管理器和Decigo中，可以直接观察到基于纯自然通胀的模型中oscillon诱导的GW。这些签名为探测潜在的通货膨胀物理学提供了新的途径。
In broad classes of inflationary models the period of accelerated expansion is followed by fragmentation of the inflaton scalar field into localized, long-lived and massive oscillon excitations. We demonstrate that matter-dominance of oscillons, followed by their rapid decay, significantly enhances the primordial gravitational wave (GW) spectrum. These oscillon-induced GWs, sourced by second-order perturbations, are distinct and could be orders of magnitude lower in frequency than the previously considered GWs associated with oscillon formation. We show that detectable oscillon-induced GW signatures establish direct tests independent from cosmic microwave background radiation (CMB) for regions of parameter space of monodromy, logarithmic and pure natural (plateau) potential classes of inflationary models, among others. We demonstrate that oscillon-induced GWs in a model based on pure natural inflation could be directly observable with the Einstein Telescope, Cosmic Explorer and DECIGO. These signatures offer a new route for probing the underlying inflationary physics.
