M-THEORY

It’s been 50 years since string theory was first proposed, but now some new research could call it all into question. WTF is Quantum Retrocausality? (ft. Physics Girl) - https://youtu.be/5hYBeFNSv2o Read More: String Theory May Create Far Fewer Universes Than Thought https://www.scientificamerican.com/article/string-theory-may-create-far-fewer-universes-than-thought/ “The problem with string theory, according to some physicists, is that it makes too many universes. It predicts not one but some 10500 versions of spacetime, each with their own laws of physics. But with so many universes on the table, how can the theory explain why ours has the features it does?” On the Cosmological Implications of the String Swampland https://arxiv.org/abs/1806.09718 “We study constraints imposed by two proposed string Swampland criteria on cosmology. These criteria involve an upper bound on the range traversed by scalar fields...We find that inflationary models are generically in tension with these two criteria.” Dark Energy May Be Incompatible With String Theory https://www.quantamagazine.org/dark-energy-may-be-incompatible-with-string-theory-20180809/ “A controversial new paper argues that universes with dark energy profiles like ours do not exist in the ‘landscape’ of universes allowed by string theory.” ____________________ Elements is more than just a science show. It’s your science-loving best friend, tasked with keeping you updated and interested on all the compelling, innovative and groundbreaking science happening all around us. Join our passionate hosts as they help break down and present fascinating science, from quarks to quantum theory and beyond. Seeker explains every aspect of our world through a lens of science, inspiring a new generation of curious minds who want to know how today’s discoveries in science, math, engineering and technology are impacting our lives, and shaping our future. Our stories parse meaning from the noise in a world of rapidly changing information. Visit the Seeker website https://www.seeker.com/videos Elements on Facebook https://www.facebook.com/SeekerElements/ Subscribe now! http://www.youtube.com/subscription_center?add_user=dnewschannel Seeker on Twitter http://twitter.com/seeker Seeker on Facebook https://www.facebook.com/SeekerMedia/ Seeker http://www.seeker.com/ Special thanks to Maren Hunsberger for hosting and writing this episode of Seeker! Check Maren out on Twitter: https://twitter.com/marenbeatrice

Michio Kaku - What is the World Made Of? - String Theory & M-Theory

Tomaso Poggio - Massachusetts Institute of Technology

FIRST BROADCAST: Wednesday, 8 September 2010. BBC Newsnight. Stephen Hawking talks to Susan Watts about M-Theory, and musician Mark Everett ('E' from Eels) describes the work of his physicist father, Hugh Everett III, on the 'Multiverse'.

Subscribe to Cosmic TV for more great space, alien and UFO content: http://bit.ly/CosmicTVSubscribe Physicists found that the apparently distinct theories were identified by mathematical transformations called S-duality and T-duality. Witten's conjecture was based in part on the existence of these dualities and in part on the relationship of the string theories to a gravitational theory called eleven-dimensional supergravity. Thanks for watching don't forget to subscribe for more adventures with Cosmic TV!http://j.mp/1pMiZrd CLICK HERE: Robotic Arm Wrestling with NASA Engineers!http://j.mp/1vkxdE2 CLICK HERE: Sedna - The Largest Planet Like Object in Our Solar System!http://j.mp/ZBnf80 Visit our site for more information on our latest releases!http://www.janson.com/ Like us on Facebook! https://www.facebook.com/jansonmedia Tweet us! https://twitter.com/jansonmedia Although a complete formulation of M-theory is not known, the theory should describe two- and five-dimensional objects called branes and should be approximated by eleven-dimensional supergravity at low energies. Modern attempts to formulate M-theory are typically based on matrix theory or the AdS/CFT correspondence. According to Witten, the M in M-theory can stand for "magic", "mystery", or "matrix" according to taste, and the true meaning of the title should be decided when a more fundamental formulation of the theory is known. Investigations of the mathematical structure of M-theory have spawned a number of important theoretical results in physics and mathematics. More speculatively, M-theory may provide a framework for developing a unified theory of all of the fundamental forces of nature. Attempts to connect M-theory to experiment typically focus on compactifying its extra dimensions to construct approximate models of our four-dimensional world.

With reports of the discovery of gravity waves, the existence of the graviton is implied. This in turn has implications for string theory, M theory and indeed any quantum theory of the universe, in providing them with an empirical basis.

Rust Cohle describes the Membrane Theory. In theoretical physics, M-theory is an extension of string theory in which 11 dimensions of spacetime are identified as 7 higher-dimensions plus the 4 common dimensions.

In less than 100 seconds, Leron Borsten explains how M-theory could be the one theory to rule them all. Visit physicsworld.com for more videos, webinars and podcasts. http://physicsworld.com/cws/channel/multimedia

Michio Kaku Explains String Theory New videos DAILY: https://bigth.ink Join Big Think Edge for exclusive video lessons from top thinkers and doers: https://bigth.ink/Edge ---------------------------------------------------------------------------------- The co-founder of Field String Theory explains why the universe has 11 dimensions rather than any other number. ---------------------------------------------------------------------------------- MICHIO KAKU: Dr. Michio Kaku is the co-founder of string field theory, and is one of the most widely recognized scientists in the world today. He has written 4 New York Times Best Sellers, is the science correspondent for CBS This Morning and has hosted numerous science specials for BBC-TV, the Discovery/Science Channel. His radio show broadcasts to 100 radio stations every week. Dr. Kaku holds the Henry Semat Chair and Professorship in theoretical physics at the City College of New York (CUNY), where he has taught for over 25 years. He has also been a visiting professor at the Institute for Advanced Study at Princeton, as well as New York University (NYU). ---------------------------------------------------------------------------------- TRANSCRIPT: Question: Why are there only 11 dimensions in the universe rather than something higher? (Submitted by John Menon) Michio Kaku: I work in something called String Theory, that’s what I do for a living. In fact, that’s my day job. I’m the co-founder of String Field Theory, one of the main branches of String Theory. The latest version of String Theory is called M-Theory, “M” for membrane. So we now realize that strings can coexist with membranes. So the subatomic particles we see in nature, the quartz, the electrons are nothing but musical notes on a tiny vibrating string. What is physics? Physics is nothing but the laws of harmony that you can write on vibrating strings. What is chemistry? Chemistry is nothing but the melodies you can play on interacting vibrating strings. What is the universe? The universe is a symphony of vibrating strings. And then what is the mind of God that Albert Einstein eloquently wrote about for the last 30 years of his life? We now, for the first time in history have a candidate for the mind of God. It is, cosmic music resonating through 11 dimensional hyperspace. So first of all, we are nothing but melodies. We are nothing but cosmic music played out on vibrating strings and membranes. Obeying the laws of physics, which is nothing but the laws of harmony of vibrating strings. But why 11? It turns out that if you write a theory in 15, 17, 18 dimensions, the theory is unstable. It has what are called, anomalies. It has singularities. It turns out that mathematics alone prefers the universe being 11 dimensions. Now some people have toyed with 12 dimensions. At Harvard University, for example, some of the physicists there have shown that a 12-dimensional theory actually looks very similar to an 11-dimensional theory except it has two times, double times rather than one single time parameter. Now, what would it be like to live in a universe with double time? Well, I remember a movie with David Niven. David Niven played a pilot, who was shot down over the Pacific, but the angels made a mistake, he was not supposed to die that day. And so the angels brought him back to life and said, “Oh, sorry about that. We killed you off by accident; you were not supposed to die today.” So in a great scene, David Niven then walks through a city where time has stopped. Everyone looks like this. And there’s David Niven just wandering around looking at all these people. That’s a world with double time. David Niven has one clock, but everyone else has a separate clock and these two clocks are perpendicular to each other. So if there’s a double time universe, you could walk right into a room, see people frozen in time, while you beat to a different clock. That’s a double time universe. Now this is called F-Theory, “F” for father, the father of strings. It’s not known whether F-Theory will survive or not; however, M-Theory in 11 dimension is the mother of all strings. And that theory works perfectly fine. So to answer your question, in other dimensions, dimensions beyond 11, we have problems with stability, these theories are unstable, they decay back down to 11 dimensions, they have what are called anomalies, singularities, which kill an ordinary theory. So the mathematics itself forces you to 11 dimensions. Also because this is a Theory of Everything, there’s more room in higher dimensions to put all the forces together. When you put gravity, electromagnetism and the nuclear force together, four dimensions is not big enough to accommodate all these forces. When you expand to 11 dimensions, bingo, everything forms perfectly well.

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View full lesson: http://ed.ted.com/lessons/string-theory-and-the-hidden-structures-of-the-universe-clifford-johnson What is everything made of? Thus far, we can break everything in the universe down to a few very small elementary particles. But they fit into strange patterns that are not understood. Some scientists believe that this is because we can go deeper - perhaps to simple vibrating strings! At TEDYouth 2012, Clifford Johnson describes these ideas, along with the concept of string theory. Talk by Clifford Johnson.

Sub atomic strings vibrate in the same way as violin strings, instead of producing notes they produce particles, each particle giving shape to the Universe. For more info:- http://www.discoveryuk.com/web/stephen-hawkings-grand-design/ Subscribe! http://www.youtube.com/subscription_center?add_user=DiscoveryTV Follow us on Twitter http://www.twitter.com/DiscoveryUK

Michio Kaku: The Universe in a Nutshell Watch the newest video from Big Think: https://bigth.ink/NewVideo Join Big Think Edge for exclusive videos: https://bigth.ink/Edge ---------------------------------------------------------------------------------- OVERVIEW: In a profoundly informative and deeply optimistic discussion, Professor Michio Kaku delivers a glimpse of where science will take us in the next hundred years, as warp drives, teleportation, inter-dimensional wormholes, and even time travel converge with our scientific understanding of physical reality. While firing up our imaginations about the future, he also presents a succinct history of physics to the present. ---------------------------------------------------------------------------------- MICHIO KAKU: Dr. Michio Kaku is the co-founder of string field theory, and is one of the most widely recognized scientists in the world today. He has written 4 New York Times Best Sellers, is the science correspondent for CBS This Morning and has hosted numerous science specials for BBC-TV, the Discovery/Science Channel. His radio show broadcasts to 100 radio stations every week. Dr. Kaku holds the Henry Semat Chair and Professorship in theoretical physics at the City College of New York (CUNY), where he has taught for over 25 years. He has also been a visiting professor at the Institute for Advanced Study as well as New York University (NYU). ---------------------------------------------------------------------------------- TRANSCRIPT: My name is Professor Michio Kaku. I’m a professor of theoretical physics at the City University of New York and I specialize in something called string theory. I’m a physicist. Some people ask me the question, “What has physics done for me lately? I mean, do I get better color television, do I get better internet reception with physics?” And the answer is yes. You see, physics is at the very foundation of matter and energy. We physicists invented the laser beam, we invented the transistor. We helped to create the first computer. We helped to construct the internet. We wrote the World Wide Web. In addition, we also helped to invent television, radio, radar, microwaves, not to mention MRI scans, PET scans, x-rays. In other words, almost everything you see in your living room, almost everything you see in a modern hospital, at some point or other, can be traced to a physicist. Now, I got interested in physics when I was a child. When I was a child of eight, something happened to me that changed my life and I wanted to be part of this grand search for a theory of everything. When I was eight, a great scientist had just died. I still remember my elementary school teacher coming into the... To read the full transcript and for more info, please visit https://bigthink.com/videos/universe-in-a-nutshell-the-physics-of-everything-with-michio-kaku ---------------------------------------------------------------------------------- ABOUT BIG THINK: Smarter Faster™ Big Think is the leading source of expert-driven, actionable, educational content -- with thousands of videos, featuring experts ranging from Bill Clinton to Bill Nye, we help you get smarter, faster. S​ubscribe to learn from top minds like these daily. Get actionable lessons from the world’s greatest thinkers & doers. Our experts are either disrupting or leading their respective fields. ​We aim to help you explore the big ideas and core skills that define knowledge in the 21st century, so you can apply them to the questions and challenges in your own life. Other Frequent contributors include Michio Kaku & Neil DeGrasse Tyson. Michio Kaku Playlist: https://bigth.ink/kaku Bill Nye Playlist: https://bigth.ink/BillNye Neil DeGrasse Tyson Playlist: https://bigth.ink/deGrasseTyson Read more at Bigthink.com for a multitude of articles just as informative and satisfying as our videos. New articles posted daily on a range of intellectual topics. Join Big Think Edge, to gain access to a world-class learning platform focused on building the soft skills essential to 21st century success. It features insight from many of the most celebrated and intelligent individuals in the world today. Topics on the platform are focused on: emotional intelligence, digital fluency, health and wellness, critical thinking, creativity, communication, career development, lifelong learning, management, problem solving & self-motivation. BIG THINK EDGE: https://bigth.ink/Edge If you're interested in licensing this or any other Big Think clip for commercial or private use, contact our licensing partner, Executive Interviews: https://bigth.ink/licensing ---------------------------------------------------------------------------------- Follow Big Think here: 📰BigThink.com: https://bigth.ink 🧔Facebook: https://bigth.ink/facebook 🐦Twitter: https://bigth.ink/twitter 📸Instagram: https://bigth.ink/Instragram 📹YouTube: https://bigth.ink/youtube ✉ E-mail: [email protected]

Theoretical physicist Michio Kaku explains the basics of String Theory in this clip from his Floating University lecture. Find out more at: http://www.floatinguniversity.com/lectures-kaku

Michio Kaku: The Universe Is a Symphony of Vibrating Strings New videos DAILY: https://bigth.ink Join Big Think Edge for exclusive video lessons from top thinkers and doers: https://bigth.ink/Edge ---------------------------------------------------------------------------------- The co-founder of Field String Theory explains why the universe has 11 dimensions rather than any other number. ---------------------------------------------------------------------------------- MICHIO KAKU: Dr. Michio Kaku is the co-founder of string field theory, and is one of the most widely recognized scientists in the world today. He has written 4 New York Times Best Sellers, is the science correspondent for CBS This Morning and has hosted numerous science specials for BBC-TV, the Discovery/Science Channel. His radio show broadcasts to 100 radio stations every week. Dr. Kaku holds the Henry Semat Chair and Professorship in theoretical physics at the City College of New York (CUNY), where he has taught for over 25 years. He has also been a visiting professor at the Institute for Advanced Study at Princeton, as well as New York University (NYU). ---------------------------------------------------------------------------------- TRANSCRIPT: Question: Why are there only 11 dimensions in the universe rather than something higher? (Submitted by John Menon) Michio Kaku: I work in something called String Theory, that’s what I do for a living. In fact, that’s my day job. I’m the co-founder of String Field Theory, one of the main branches of String Theory. The latest version of String Theory is called M-Theory, “M” for membrane. So we now realize that strings can coexist with membranes. So the subatomic particles we see in nature, the quartz, the electrons are nothing but musical notes on a tiny vibrating string. What is physics? Physics is nothing but the laws of harmony that you can write on vibrating strings. What is chemistry? Chemistry is nothing but the melodies you can play on interacting vibrating strings. What is the universe? The universe is a symphony of vibrating strings. And then what is the mind of God that Albert Einstein eloquently wrote about for the last 30 years of his life? We now, for the first time in history have a candidate for the mind of God. It is, cosmic music resonating through 11 dimensional hyperspace. So first of all, we are nothing but melodies. We are nothing but cosmic music played out on vibrating strings and membranes. Obeying the laws of physics, which is nothing but the laws of harmony of vibrating strings. But why 11? It turns out that if you write a theory in 15, 17, 18 dimensions, the theory is unstable. It has what are called, anomalies. It has singularities. It turns out that mathematics alone prefers the universe being 11 dimensions. Now some people have toyed with 12 dimensions. At Harvard University, for example, some of the physicists there have shown that a 12-dimensional theory actually looks very similar to an 11-dimensional theory except it has two times, double times rather than one single time parameter. Now, what would it be like to live in a universe with double time? Well, I remember a movie with David Niven. David Niven played a pilot, who was shot down over the Pacific, but the angels made a mistake, he was not supposed to die that day. And so the angels brought him back to life and said, “Oh, sorry about that. We killed you off by accident; you were not supposed to die today.” So in a great scene, David Niven then walks through a city where time has stopped. Everyone looks like this. And there’s David Niven just wandering around looking at all these people. That’s a world with double time. David Niven has one clock, but everyone else has a separate clock and these two clocks are perpendicular to each other. So if there’s a double time universe, you could walk right into a room, see people frozen in time, while you beat to a different clock. That’s a double time universe. Now this is called F-Theory, “F” for father, the father of strings. It’s not known whether F-Theory will survive or not; however, M-Theory in 11 dimension is the mother of all strings. And that theory works perfectly fine. So to answer your question, in other dimensions, dimensions beyond 11, we have problems with stability, these theories are unstable, they decay back down to 11 dimensions, they have what are called anomalies, singularities, which kill an ordinary theory. So the mathematics itself forces you to 11 dimensions. Also because this is a Theory of Everything, there’s more room in higher dimensions to put all the forces together. When you put gravity, electromagnetism and the nuclear force together, four dimensions is not big enough to accommodate all these forces. When you expand to 11 dimensions, bingo, everything forms perfectly well.

Stephen Hawking poses some of the key questions that all of us sometimes wonder. He has set out to answer these questions in his new book, The Grand Design. Hawking presents M Theory as the grand solution. It's a family of different theories working similarly to a grouping of maps. He also discusses the role of cosmology, the inflation of the universe and the Planck satellite. Google Zeitgeist is a collection of talks by people who are changing the world. Hear entrepreneurs, CEOs, storytellers, scientists, and dreamers share their visions of how we can shape tomorrow.

(November 23, 2010) Leonard Susskind gives a lecture on the constraints of string theory and gives a few examples that show how these work. String theory (with its close relative, M-theory) is the basis for the most ambitious theories of the physical world. It has profoundly influenced our understanding of gravity, cosmology, and particle physics. In this course we will develop the basic theoretical and mathematical ideas, including the string-theoretic origin of gravity, the theory of extra dimensions of space, the connection between strings and black holes, the "landscape" of string theory, and the holographic principle. This course was originally presented in Stanford's Continuing Studies program. Stanford University: http://www.stanford.edu/ Stanford Continuing Studies Program: http://csp.stanford.edu/ Stanford University Channel on YouTube: http://www.youtube.com/stanford

(November 1, 2010) Leonard Susskind discusses the specifics of strings including Feynman diagrams and mapping particles. String theory (with its close relative, M-theory) is the basis for the most ambitious theories of the physical world. It has profoundly influenced our understanding of gravity, cosmology, and particle physics. In this course we will develop the basic theoretical and mathematical ideas, including the string-theoretic origin of gravity, the theory of extra dimensions of space, the connection between strings and black holes, the "landscape" of string theory, and the holographic principle. This course was originally presented in Stanford's Continuing Studies program. Stanford University: http://www.stanford.edu/ Stanford Continuing Studies Program: http://csp.stanford.edu/ Stanford University Channel on YouTube: http://www.youtube.com/stanford

(November 30, 2010) Professor Leonard Susskind continues his discussion on T-Duality; explains the theory of D-Branes; models QFT and QCD; and introduces the application of electromagnetism. String theory (with its close relative, M-theory) is the basis for the most ambitious theories of the physical world. It has profoundly influenced our understanding of gravity, cosmology, and particle physics. In this course we will develop the basic theoretical and mathematical ideas, including the string-theoretic origin of gravity, the theory of extra dimensions of space, the connection between strings and black holes, the "landscape" of string theory, and the holographic principle. This course was originally presented in Stanford's Continuing Studies program. Stanford University: http://www.stanford.edu/ Stanford Continuing Studies Program: http://csp.stanford.edu/ Stanford University Channel on YouTube: http://www.youtube.com/stanford

(October 25, 2010) Leonard Susskind focuses on the different dimensions of string theory and the effect it has on the theory. String theory (with its close relative, M-theory) is the basis for the most ambitious theories of the physical world. It has profoundly influenced our understanding of gravity, cosmology, and particle physics. In this course we will develop the basic theoretical and mathematical ideas, including the string-theoretic origin of gravity, the theory of extra dimensions of space, the connection between strings and black holes, the "landscape" of string theory, and the holographic principle. This course was originally presented in Stanford's Continuing Studies program. Stanford University: http://www.stanford.edu/ Stanford Continuing Studies Program: http://csp.stanford.edu/ Stanford University Channel on YouTube: http://www.youtube.com/stanford