The Multiverse, Science or Science Fiction? | Sean Carroll

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Anyone familiar with popular entertainment has surely heard about the multiverse theory—either in movies, TV shows, or sci-fi novels. In this video, Sean Carroll discusses the possibility that the big bang originated in a multiverse, giving rise to the arrow of time. But is this theory legitimate science or science fiction?

Presented by Sean Carroll
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0:00 Is the Multiverse Hypothesis Valid?
4:56 Considering Hypothetical Universes
6:11 The Anthropic Principle
8:11 Understanding Vacuum Energy
10:17 Vacuum Energy Prediction
12:44 Inflation and Quantum Mechanics
15:55 Eternal Inflation and Pocket Universes
17:44 String Theory Explains Space-Time
21:16 Addressing Problems with Multiverse Hypothesis
23:11 Using Dark Matter to Make Predictions
24:00 Measure Problem with Multiverse
25:48 Why We Consider the Multiverse
27:21 Moving Forward with Multiverse Idea

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#multiverse #physics #spacetime