论文标题
重力再加热
Gravitational reheating
论文作者
论文摘要
由于缺乏观察结果，我们目前对加热阶段的理解是不完整的。除了其宇宙学的含义外，再加热还应在粒子物理和通货膨胀模型构建中起着至关重要的作用。传统上加热动力学的建模是通过调用自发性和女儿场之间的任意耦合来建立的。这种方法由于其任意耦合而缺乏强大的宇宙学预测，并且很难通过观察来验证。在本文中，我们提出了一种最小的再加热场景，其中充气与所有女儿田地仅重力结合在一起。除了成功地重新加热宇宙外，该方案还对原始引力波谱进行了强烈的宇宙学预测，并丢弃了许多可能与普朗克一致的暗物质和通货膨胀模型。
Our present understanding of the reheating phase is incomplete due to a lack of observations. Apart from its cosmological implications, the reheating should play a vital role in particle physics and inflation model building. Conventionally reheating dynamics are modeled by invoking arbitrary coupling among the inflaton and daughter fields. Such an approach lacks robust cosmological predictions due to its arbitrary couplings and is difficult to verify through observation. In this paper, we propose a minimal reheating scenario where the inflaton is coupled with all the daughter fields only gravitationally. Besides being successful in reheating the Universe, the scenario offers a strong cosmological prediction of the primordial gravitational wave spectrum and discards a large number of possible models of dark matter and inflation that are otherwise consistent with Planck.
