Loop Quantum Gravity Explained

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE↓ More info below ↓Uploaded 15-10-19Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetimeCheck out the Space Time Merch Storehttps://pbsspacetime.com/It’s time we talked about loop quantum gravity. What exactly is it? What are the loops? And can it really defeat string theory in our quest for a Theory of Everything?Hosted by Matt O'DowdWritten by Graeme Gossel and Matt O'DowdGraphics by Leonardo ScholzerDirected by: Andrew KornhaberExecutive Producers: Eric Brown and Andrew KornhaberEnd Credits Music by J.R.S. Schattenberg: https://www.youtube.com/channel/UCRl6-nb4iOnsij-vnpAjp0QThe holy grail of physics is to connect our understanding of the tiny scales of atoms and subatomic particles with that of the vast scales of planets, galaxies, and the entire universe. To connect quantum physics with Einstein’s general theory of relativity. Our search for a theory of quantum gravity is a century old, and we’ve talked quite a bit about it already, including what’s probably the lead contender - string theory. But string theory isn’t the only game in town - or so some physicists believe. There may be another way to reconcile the physics of the tiny and the gigantic - another way to a theory of quantum gravity that avoids a lot of conceptual baggage like tiny wiggling strings made of coiled up extra dimensions. That other way would be loop quantum gravity, and today we’re going to learn exactly what it is. Special Thanks to Our Patreon SupportersBig Bang Supporters:David BarnholdtDavid BoyerDavid NicklasFabrice EapJuan Benetmatt millerMorgan HoughQuasar:Mark HeisingMark RosenthalVinnie FalcoHypernova:chuck zegarDanton SpiveyDonal BotkinEdmund FokschanerHank Sjoe pearceJohn HofmannJohn R.