The imperfect universe: Goodbye, theory of everything

 作者:屠芹踬     |      日期:2019-03-14 08:05:00
By Marcelo Gleiser FIFTEEN years ago, I was a physicist hard at work hunting for a theory of nature that would unify the very big and the very small. There was good reason to hope. The great and the good were committed. Even Einstein, who recognised that our understanding of reality is necessarily incomplete, had spent the last 20 years of his life searching for a unified field theory that would describe the two main forces we see acting around us – gravity and electromagnetism – as manifestations of a single force. For him,