If you asked an astrophysicist today to describe what happened after the Big Bang, he would likely start with the concept of “cosmic inflation.” Cosmic inflation argues that right after the Big Bang - we’re talking after a teeny fraction of a second - the universe expanded at breakneck speed like dough in an oven.īut this exponential expansion should create, due to quantum mechanics, regions where the universe continues to grow forever and regions where that growth stalls. Instead, the authors argue the Big Bang had a finite boundary, defined by string theory and holograms. The new report, co-authored by Belgian physicist Thomas Hertog, counters the longstanding idea that the universe will expand for eternity. On Wednesday, the Journal of High Energy Physics published the British scientist’s final thoughts on the Big Bang, the leading theory for how the universe began. It turns out he had one more theory left in the locker. Before he passed away in March, theoretical physicist Stephen Hawking had published more than 230 articles on the birth of the universe, black holes and quantum mechanics.
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