论文标题
放松大量宇宙常数后重新加热
Reheating after relaxation of large cosmological constant
论文作者
论文摘要
我们提出了一个早期场景的宇宙学模型，该模型结合了潜在的真空能量的放松过程，然后是连接到标准热爆炸宇宙的重新加热时代。避免微调的宇宙常数是通过标量场的动力学实现的，该标量场的动力学由时空曲率的反向能力调节。虽然它正在反对对黑能的辐射校正，但仅这种机制不仅可以消除真空能量，还可以消除所有其他物质内容物。我们目前的工作旨在通过利用违反无效的部门来完成该方案，该领域最终将能源转移到重新加热部门。我们提供了这一过程的明确例子，因此是宇宙发作的具体情况，该场景以可忽略不计的宇宙常数实现了宇宙的热历史。
We present a cosmological model of an early-time scenario that incorporates a relaxation process of the would-be large vacuum energy, followed by a reheating era connecting to the standard hot big bang universe. Avoiding fine-tuning the cosmological constant is achieved by the dynamics of a scalar field whose kinetic term is modulated by an inverse power of spacetime curvature. While it is at work against radiative corrections to the dark energy, this mechanism alone would wipe out not only the vacuum energy but also all other matter contents. Our present work aims to complete the scenario by exploiting a null-energy-condition violating sector whose energy is eventually transferred to a reheating sector. We provide an explicit example of this process and thus a concrete scenario of the cosmic onset that realizes the thermal history of the Universe with a negligible cosmological constant.
