Fahr Hans-Jörg, Heyl Michael
Argelander Institute for Astronomy, University of Bonn, 53121, Bonn, Germany.
Naturwissenschaften. 2007 Sep;94(9):709-24. doi: 10.1007/s00114-007-0235-1. Epub 2007 Apr 25.
In the more recent literature on cosmological evolutions of the universe, the cosmic vacuum energy has become a nonrenouncable ingredient. The cosmological constant Lambda, first invented by Einstein, but later also rejected by him, presently experiences an astonishing revival. Interestingly enough, it acts like a constant vacuum energy density would also do. Namely, it has an accelerating action on cosmic dynamics, without which, as it appears, presently obtained cosmological data cannot be conciliated with theory. As we are going to show in this review, however, the concept of a constant vacuum energy density is unsatisfactory for very basic reasons because it would claim for a physical reality that acts upon spacetime and matter dynamics without itself being acted upon by spacetime or matter.
在关于宇宙宇宙学演化的最新文献中，宇宙真空能量已成为一个不可忽视的要素。宇宙学常数Λ最初由爱因斯坦提出，但后来他又摒弃了它，而如今它正经历着惊人的复兴。有趣的是，它的作用就如同恒定的真空能量密度一样。也就是说，它对宇宙动力学具有加速作用，而没有这种作用的话，目前所获得的宇宙学数据似乎就无法与理论相协调。然而，正如我们将在本综述中所展示的，恒定真空能量密度的概念由于非常基本的原因而并不令人满意，因为它所主张的物理实在作用于时空和物质动力学，却自身不受时空或物质的作用。
