Three Ways Physicists Think Reality Works – Quantum Reality (2/3) with Jim Al-Khalili

What if the universe really is made of parallel worlds? What if particles are riding the trajectory of a hidden wave? What if quantum wavefunctions collapse spontaneously due to real physical processes? In episode two of our series on quantum realism, Jim Al-Khalili talks to three experts who each champion different interpretations of quantum mechanics – the Many Worlds Interpretation, Pilot Wave Theory and Objective Collapse. They are three fascinating ideas and this is one of the deepest debates in modern physics. Each one attempts to rescue reality by offering an alternative to the traditional Copenhagen interpretation of quantum mechanics, and giving explanations to the measurement problem. We touch on determinism, Schrödinger's Cat, the double-slit experiment and when quantum probability becomes reality. Which theory do you find most compelling? Watch episode one: There’s a Problem with Quantum Mechanics –... Watch episode three: Can Quantum Particles Communicate Faster T... Chapters 00:00 Why quantum mechanics challenges reality 03:29 The Many Worlds Interpretation 12:38 Pilot Wave Theory 20:38 Objective Collapse Theory 25:11 Comparing the three realist interpretations Patreon Membership Becoming a Member on Patreon helps support the channel and fund our videos. Join us for early access to videos, bonus content and our infinite thanks: Patreon: Unbaffled Infinite thanks to our Patreon Unbafflers John F Taylor Maria Sputnik Thanks to • Professor Simon Saunders (University of Oxford) • Professor Antony Valentini (Imperial College London) • Professor Angelo Bassi (University of Trieste) • Pilot Wave Theory simulations comparing standard and non-standard behaviour by Dr Nicolas Underwood at Newcastle University, who is supported by Dr Jonte R Hance's EPSRC Quantum Technologies Career Acceleration Fellowship (UKRI1217). • Get Antony Valentini's book 'Beyond the Quantum' here: https://global.oup.com/academic/produ... • For more on Pilot Wave Theory check out Chris Dewdney’s GFX of many quantum phenomena: ‪@chrisdewdney3297‬ Follow us on social media Facebook: UnbaffledScience Instagram: unbaffledscience TikTok: unbaffledscience https://bsky.app/profile/jimalkhalili... About Unbaffled Some ideas are hard to wrap your head around, but science doesn't have to be baffling. Unbaffled helps curious people, like you, develop an intuitive understanding of the science that shapes our world. Presented by Professor Jim Al-Khalili, we’re bringing you clear explanations of topics across science, technology and maths that will leave you informed and amazed. Monthly videos. Subscribe to be unbaffled. #Unbaffled #JimAlKhalili #quantumphysics #quantummechanics #quantum #quantumreality #manyworlds #pilotwave #objectivecollapse #schrodingerscat #doubleslitexperiment