Lecture 4 | String Theory and M-Theory
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(October 11, 2010) Leonard Susskind gives a lecture on the string theory and particle physics. During this lecture he focuses on closed string theory as opposed to open string 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
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51.34
brain explodes
go to pub -
fantastic
thanks
and understandable
beautiful that noether theorem links classical and quantum
this is Natures secrets being shown by a great explorer -
congrats to Stanford tech staff for quality video, sound, and for keeping up with the action. Thx!!
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Isn't Susskind using classical physics, while string theory is quantum mechanical? His Hamiltonian is not an operator, and as I understand it, the Lagrangian in QM becomes the path integral formulation, which the Lagrangian here is not. I suppose from this that the way he is teaching string theory here is to use classical these notions to make an analogy in order to teach the principles most easily, while string theory is actually expressed with a Hilbert space and the Dirac-VonNeuman postulates/axioms as applied to strings? In some sense, that is breaking his code of taking the listener beyond a 'Scoentific American' type cop-out. However, I suppose in order to teach so much about string theory in ten lectures, this short-cutting is necessary? I was wondering if I've got all this right, or someone can explain where I'm wrong.
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Comments here have at least months... most of them are from 1 and 2 year ago. It makes me sad knowing that this kind of knowledge is not viewed, appreciated and certainly, not searched on the web. In the world of information... ignorance is not an excuse... it´s an option. Thank you again, Stanford University, for this amazing series of lectures.
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Thank you Stanford University and thank you Dr. Sussking for such a generous gift and for feeding our curiosity.
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so offset of magnetic pole / gravitational pole "an unbalanced wave the axises would be breached or creating a 3ed osculating wave or off axises interference patten", applied , moon/s(size dependent) interference pattern between magnetic pole / gravitational poles, gravitational interference increased magnetic strength see Venus /Earth
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the following clip a concept of subatomic structor electron "wave packet" acheving a ground state or 3d or gravity as you refer to it "perhaps" /watch?v=XvQRYCaiEvw
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off azis photon
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gravity is a foundation of he 3d state which is dependent on the discombobulated string structor of the string
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imagine an onion each layer a recoiled string so it could envloipe its self & acts like a solid also my favorite consideration
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i was thinking considering the strings potential is its self ,a self joined string my dissolve its potential counseling its self out ,or it may detach & open in another or weakest point,the most articulated or if discombobulated turn its self into a ball imatating a 3d mass so a 2string gives the left right occulasion
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creationists
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I don't think philosophy is the right word. But you're basically right. It's a mathematical beauty. It's unclear whether it should be called a physical theory. It does make testable predictions. They're just really hard to test. But look, any string theorist would abandon the theory in a heartbeat if it was proven wrong by experiment. A philosopher would just say something cute and pretend like it didn't happen.
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I was about to flag your comment, but then i read the one that it's a reply to. Couldn't have said it better myself
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agree but you are feeding him with exactly what he wants - a reply . the best thing for trollers is to ignore them - totally.
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Yes, but Horst has all the secrets of the universe in his head, but he is too important to tell us what they are.
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You have an advanced case of Dunning Kruger syndrome. You should seek help or kill yourself. Either no one cares. Even your mother thinks you are pathetic.
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