much of his work bears on the concept of parallel universes : evaluating evidence for infinite space and cosmological inflation; developing insights into quantum decoherence; and studying the possibility that the amplitude of microwave background fluctuations, the dimensionality of spacetime and the fundamental laws of physics can vary from place to place 許多他的工作都含有平行宇宙的概念:評(píng)估無(wú)限大空間與宇宙暴脹的證據(jù),發(fā)展對(duì)量子去相干現(xiàn)象的洞察,以及研究諸如微波背景輻射漲落的振幅、時(shí)空的維度以及物理的基本定律可隨位置而變化的可能性。