论文标题
时空离散性的宇宙常数
The cosmological constant from space-time discreteness
论文作者
论文摘要
我们将时空的背景视为由Planck量表上离散体积元素组成的物理系统，并通过Debye模型获得时空的内部能量。从内部能量的热运动部分提出了粒子的温度依赖性最小能限。随着宇宙膨胀引起的温度降低，由于能量极限的变化，越来越多的粒子将被“释放”，我们将这些新粒子视为暗能量的来源。最小能量极限还导致宇宙中校正的颗粒数量和修饰的保护方程。根据修改后的保护方程，获得了与观察到的值一致的有效宇宙常数。
We regard the background of space-time as a physical system composed of discrete volume elements at the Planck scale and get the internal energy of space-time by Debye model. A temperature-dependent minimum energy limit of the particles is proposed from the thermal motion part of the internal energy. As decreases of the temperature caused by the expansion of the universe, more and more particles would be"released" because of the change of the energy limit, we regard these new particles as a source of dark energy. The minimum energy limit also leads to a corrected number of particles in universe and a modified conservation equation. According to the modified conservation equation, an effective cosmological constant consistent with its observed value is obtained.
