What If Reality Has More Than 1 Outcome? Quantum Physics Explained

Could another version of you exist, experiencing a different outcome? Quantum physics contains a proposal that takes that possibility seriously. The Many Worlds interpretation keeps quantum evolution without adding a collapse: different outcomes become effectively separate branches. This documentary follows the experiments, the idea and the open questions. Explore the double-slit experiment, Schrodinger's cat, entanglement, decoherence and quantum computers. See why 2 branches do not imply equal probabilities, and how interference with molecules containing about 2,000 atoms pushes experimental limits. Tested quantum effects and evidence for another version of you are different things. Featuring original excerpts from Sean Carroll, Alain Aspect, David Wallace, Talia Gershon, Michele Grossi and Markus Aspelmeyer. Which idea is stranger: 1 outcome being selected, or multiple outcomes remaining in separate branches? Comment below, like the video and subscribe to Matter of Why. CHAPTERS 00:00 Could there be another you? 00:43 The experiment that challenges everyday logic 01:53 Entanglement and what Bell tests reveal 03:10 Schrodinger's cat and the measurement puzzle 04:23 What branching worlds would mean 05:39 Competing explanations of quantum reality 06:53 Can quantum computers settle the question? 08:09 Why 2 branches do not mean equal chances 09:18 8 amplitudes, 1 measured result 10:35 Quantum interference with 2,000 atoms 11:49 Bigger experiments and the gravity challenge 13:02 What we know - and what remains unproven SCIENCE SOURCES Schlosshauer: Decoherence, the measurement problem, and interpretations of quantum mechanics https://arxiv.org/abs/quant-ph/0312059 Wallace: Decoherence and its Role in the Modern Measurement Problem https://arxiv.org/abs/1111.2187 Wallace: Decoherence and Ontology, or: How I Learned To Stop Worrying And Love FAPP https://arxiv.org/abs/1111.2189 Sebens and Carroll: Many Worlds, the Born Rule, and Self-Locating Uncertainty https://arxiv.org/abs/1405.7907 Shalm et al.: A strong loophole-free test of local realism https://www.nist.gov/publications/str... Nobel Prize 2022: Experiments with entangled particles and Bell inequalities https://www.nobelprize.org/prizes/phy... Fein et al. 2019: Quantum superposition of molecules beyond 25 kDa https://www.nature.com/articles/s4156... University of Vienna: 2019 molecular interference experiment https://arndt.univie.ac.at/fileadmin/... Bassi et al.: Models of wave-function collapse, underlying theories, and experimental tests https://arxiv.org/abs/1204.4325 Bassi, Dorato and Ulbricht: Collapse Models: A Theoretical, Experimental and Philosophical Review https://arxiv.org/abs/2310.14969 Steane: A quantum computer only needs one universe https://www.sciencedirect.com/science... EXPERT RECORDINGS Sean Carroll - CERN / Sean Carroll https://videos.cern.ch/record/3018191 Alain Aspect - CERN / Quantum Innovations, 2024 https://videos.cern.ch/record/3006678 David Wallace - University of Oxford / David Wallace https://podcasts.ox.ac.uk/plurality-w... Talia Gershon - WIRED / Talia Gershon https://www.wired.com/video/watch/5-l... Michele Grossi - CERN / Quantum Innovations, 2024 https://videos.cern.ch/record/3006678 Markus Aspelmeyer - CERN / Markus Aspelmeyer, 2017 https://videos.cern.ch/record/3005763 ARCHIVE & PRODUCTION CREDITS NASA/JPL-Caltech / International Space Station - Cold Atom Lab: https://images.nasa.gov/details/JPL-2... https://images.nasa.gov/details/20200... NIST - Boulder laboratory footage and electron-beam equipment: https://www.nist.gov/video/nist-bould... https://www.nist.gov/video/visit-e-be... Additional stock footage: Mixkit, Stock Video Free License. https://mixkit.co/license/ Original score: Unseen Alternatives. Diagrams and conceptual animations: Matter of Why. Archive laboratory scenes provide illustrative context; they are not footage of every experiment discussed. Mirror imagery and the cover are visual metaphors. Excerpts were captioned, cropped or fitted; original expert speech retains its recorded speed. No expert or institution endorsement is implied. #QuantumPhysics #ParallelUniverses #ManyWorlds #QuantumMechanics #SchrodingersCat #QuantumEntanglement #DoubleSlitExperiment #QuantumComputing #ScienceDocumentary #MatterOfWhy