Inside the Search for Extra Dimensions, with Lara Anderson
Free with YouTube's ads, posted by StarTalk (StarTalk by Neil deGrasse Tyson)
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About this film
Why does string theory need ten dimensions? Neil deGrasse Tyson and comic co-host Jordan Klepper sit down with Lara Anderson, string theorist and associate professor of physics at Virginia Tech, to tackle intersecting dimensions, the nature of gravity, and a unified field theory. What are the physics beyond the Higgs Boson? We discuss the problem of quantum gravity and whether string theory will solve it. Is a unified field theory too hard for our species, or are we just not smart enough yet? What exactly is a string? How can a one-dimensional object vibrate without intersecting other dimensions? Lara walks through world sheets, membranes, closed string loops, and why the math indicates higher dimensions. We discuss how to visualize other dimensions.
Could a higher-dimensional object intersecting our spacetime appear as a black hole? Why is gravity forty orders of magnitude weaker than every other force? Could it be leaking into extra dimensions? Could dark matter be ordinary matter spilling out of other dimensions into ours? What are quantum anomalies, and why do they only cancel out when string theory operates in exactly ten dimensions?
We discuss celestial holography and whether everything in the universe is encoded on a 2D boundary. We explore the nature of time in a universe if nothing is repeated, whether dimensions are objective features of reality or just organizing constructs, and why you can never get rid of probabilities in quantum physics, even with hidden variables. Keep Looking Up!
Timestamps: 00:00 - Introduction: Lara Anderson 04:55 - The Higgs Boson 09:11 - Will String Theory Deliver? 13:31 - What Is a String? 17:30 - Visualizing Higher Dimensions 19:30 - How could a string accomplish anything? 21:15 - Are Black Holes Higher Dimensional Objects Intersecting Spacetime? 24:55 - Finding Small & Large Spatial Dimensions 31:09 - The Consistency Test & The 10 Dimensions 34:00 - Could We Go to Higher Dimensions? 40:13 - Cosmic Holography 42:52…
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