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 Learn more about multiverse theory at www.wondrium.com/youtube 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 ------------------------------------------- The Great Courses is the global leader in lifelong learning and our video-on-demand service The Great Courses Plus gives you unlimited, uninterrupted access to a world of learning anytime and anywhere you want it. With courses on thousands of topics, you are sure to find something that will ignite your curiosity and invigorate your passion for learning. Enjoy a curated sampling of our full catalog of content by subscribing to our YouTube channel. We add new history, science, and math videos every week. ------------------------------------------- Read articles from the smartest experts in their fields: www.Thegreatcoursesdaily.com Find us on all our social channels: -Facebook: www.facebook.com/wondrium -Twitter: twitter.com/wondrium -Instagram: www.instagram.com/wondrium ------------------------------------------- #multiverse #physics #spacetime

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