Aguirre Anthony, Gratton Steven, Johnson Matthew C
SCIPP, University of California-Santa Cruz, Santa Cruz, CA 95064, USA.
Phys Rev Lett. 2007 Mar 30;98(13):131301. doi: 10.1103/PhysRevLett.98.131301.
We argue that, in the context of eternal inflation in the landscape, making predictions for cosmological--and possibly particle physics--observables requires a measure on the possible cosmological histories as opposed to one on the vacua themselves. If significant slow-roll inflation occurs, the observables are generally determined by the history after the last transition between metastable vacua. Hence, we start from several existing measures for counting vacua and develop measures for counting the transitions between vacua.
我们认为，在景观中永恒暴胀的背景下，对宇宙学——以及可能的粒子物理学——可观测物进行预测需要一种针对可能的宇宙学历史的测度，而非针对真空本身的测度。如果发生显著的慢滚暴胀，可观测物通常由亚稳真空之间最后一次转变之后的历史所决定。因此，我们从几种现有的计算真空的测度出发，发展出计算真空之间转变的测度。
