论文标题
揭示一个跨普兰克世界解决了宇宙常数问题
Revealing A Trans-Planckian World Solves The Cosmological Constant Problem
论文作者
论文摘要
普朗克量表通常被认为是一堵墙。将截止值放在那里并将其视为量化的时空实体表明。但是，这正是量子重力许多问题的原因。宇宙学的恒定问题也归结为如何通过连续理论描述跨普兰克世界的问题，该理论应具有恢复性和无背景。在这里，我们表明，当以差异不变的方法量化重力时，在这种方法中，背景自由会渐近地形成确切的保形对称性时，零点的能量会相同消失。因此，宇宙常数没有问题，这是一个物理常数，即重生群体不变。我们还认为，基于背景自由的新量子出现，时空会动态离散。原始波动将来自这种量子。
The Planck scale is usually believed to be an unpassable wall. Putting a cutoff there and thinking of it as a quantized spacetime entity shows that. However, this is exactly the cause of many problems in quantum gravity. The cosmological constant problem also comes down to the problem of how to describe a trans-Planckian world by a continuum theory that shall be renormalizable and background free. Here, we show that when quantizing gravity in a diffeomorphism-invariant method, in which background freedom arises asymptotically as an exact conformal symmetry, the zero-point energy vanishes identically. Thus, there is no problem with the cosmological constant, which is a physical constant, namely a renormalization group invariant. We also argue that new quanta based on the background freedom emerge and spacetime is discretized dynamically. Primordial fluctuations will originate from such quanta.
