Solving the Impossible in Quantum Field Theory

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACEUploaded 12-07-17How do you calculate infinite quantum outcomes? Feynman Diagrams. Get your first two months of Curiosity Stream for free by going https://curiositystream.com/spacetime and using the promo code “spacetime” at sign up.You can further support us on Patreon at https://www.patreon.com/pbsspacetimeGet your own Space Time t­shirt at http://bit.ly/1QlzoBiTweet at us! @pbsspacetimeFacebook: facebook.com/pbsspacetimeEmail us! pbsspacetime [at] gmail [dot] comComment on Reddit: http://www.reddit.com/r/pbsspacetimeHelp translate our videos! https://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7gPrevious Episode:Feynman’s Infinite Quantum Pathshttps://www.youtube.com/watch?v=vSFRN-ymfgEThe equations of quantum field theory allow us to calculate the behaviour of subatomic particles by expressing them as vibrations in quantum fields. But even the most elegant and complete formulations of quantum physics – like the Dirac equation or Feynman’s path integral - become impossibly complicated when we try to use them on anything but the most simple systems. But physicists tend to interpret “that’s impossible” as “I dare you to try!” And try they did. First they expressed these impossible equations in approximate but solvable forms. Then they tackled the pesky infinities that kept appearing in these new, approximate equations. Finally, the entire mess was ordered into a system that mere humans could deal using the famous Feynman diagrams.Written and Hosted by Matt O’Dowd Produced by Rusty WardGraphics by Kurt RossAssistant Edit and Sound Design by Mike PetrowMade by Kornhaber Brown (www.kornhaberbrown.com)Comments answer by Matt:Christian Haashttps://www.youtube.com/watch?v=vSFRN-ymfgE&lc=z132vnrhvkq1d3wbi04cdvewopzqjhtidn40kPsy Koshhttps://www.youtube.com/watch?v=vSFRN-ymfgE&lc=z12evvsbtvahjprpx04cclc4nprifxdzwcclohphathttps://www.youtube.com/watch?v=vSFRN-ymfgE&lc=z123gzmhdyezideg504chbuy2rnne1tjx5cSpecial thanks to our Patreon Big Bang, Quasar and Hypernova Supporters: Big BangCoolAsCatsShane RobinsonDavid NicklasEugene LawsonJoshua DavisQuasarTambe BarsbayMax LevineMayank M. MehrotaMars YenturJoshMark RosenthalDean FuquaHypernovaChuck ZegarJordan YoungRatfeastJohn HofmannJoseph Salomone Martha HuntCraig PetersonProf. Dr. Kenneth Michael BeckScience Via MarketsThanks to our Patreon Gamma Ray Burst Supporters: Peter DurocherMichael KersChris HicksMark VasilePatrick MurrayJustin LloydSultan AlkhulaifiAlex SetoConor DillonJared MooreMichal-Peanut KarmiBernardo HigueraErik SteinDaniel LyonsKevin WarneJJ BagnellJ RejcAmy JieAvi GoldfingerJohn PettitShannan CatalanoFlorian StinglmayrYubo DuBenoit Pagé-GuitardNathan LenizJessica FraleyLoro LukicBrandon LabonteDavid CraneGreg Weiss Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices