论文标题
通货膨胀与精髓之间的量子重力连接
The quantum gravity connection between inflation and quintessence
论文作者
论文摘要
通货膨胀和精髓都可以通过单个标量场来描述。该宇宙场的宇宙时间演变实现了从无限过去的紫外线固定点的区域到无限未来的红外固定点的交叉。这等于从早期通货膨胀到晚期动态暗能量的过渡，并具有中间的辐射和物质支配。量子重力中重新归一化流的缩放溶液连接两个固定点。它提供了交叉宇宙学所需的标量潜力的基本特征，并动态解决了宇宙常数问题。红外固定点处的量子尺度对称性保护了cosmon的微小质量，并抑制了cosmon耦合与原子无需非线性筛选机制，从而解释了明显的微调问题。对于给定的颗粒含量，量子重力的缩放解是通货膨胀和动态暗能量的性质的预测框架。
Inflation and quintessence can both be described by a single scalar field. The cosmic time evolution of this cosmon field realizes a crossover from the region of an ultraviolet fixed point in the infinite past to an infrared fixed point in the infinite future. This amounts to a transition from early inflation to late dynamical dark energy, with intermediate radiation and matter domination. The scaling solution of the renormalization flow in quantum gravity connects the two fixed points. It provides for the essential characteristics of the scalar potential needed for the crossover cosmology and solves the cosmological constant problem dynamically. The quantum scale symmetry at the infrared fixed point protects the tiny mass of the cosmon and suppresses the cosmon coupling to atoms without the need of a non-linear screening mechanism, thereby explaining apparent issues of fine tuning. For a given content of particles the scaling solution of quantum gravity is a predictive framework for the properties of inflation and dynamical dark energy.
