Bouncy cosmos makes inflation a sure thing

摘要

Is Our universe a recycled version of an earlier cosmos? The idea, which replaces the big bang with a "big bounce", has received a boost: this vision of the birth of the universe can explain why a subsequent process, called inflation, occurred.rn"The result puts the idea of inflation on firmer ground, and at the same time makes the bounce scenario much more credible," says Carlo Rovelli, who was not involved in the work but studies quantum gravity at the University of Marseille in France.