For a few physicists, the Big Bang wasn’t the beginning of the universe. Rather, they say, the universe existed before that point, stretching forever into the past as well as the future. While the ...
A team of cosmologists from the University of Paris-Saclay, CNRS/IN2P3, Jagiellonian University and the University of Geneva derived a general expression for the bispectrum in bouncing cosmologies and ...
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