Lecture – 17 Quantum Physics

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Lecture – 17 Quantum Physicsby wpjljron.Lecture – 17 Quantum PhysicsLecture Series on Quantum Physics by Prof.V.Balakrishnan, Department of Physics, IIT Madras. For more details on NPTEL visit http://nptel.iitm.ac.in.

Lecture Series on Quantum Physics by Prof.V.Balakrishnan, Department of Physics, IIT Madras. For more details on NPTEL visit http://nptel.iitm.ac.in.

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10 Responses

  1. collegev8 November, 2013 at 11:43 pm

    is something wrong with the expression he wrote down at 5:17?

    dxi/dt =[xi, H]/(i h-bar) is fine. but when i computed the commutator and
    substituted into this equation, the factor i h-bar cancels, i.e. dxi/dt =
    (pi-eAi)/m. in fact that makes more sense because dxi/dt the i-component of
    velocity should be a real number. 

  2. shashank k28 January, 2013 at 3:41 pm

    Anyone interested in a quality book. Here’s a gem: Principles of Quantum
    mechanics – R.Shankar.

  3. collegev13 July, 2012 at 4:31 pm

    the QM book by herbert kroemer (chapter 8) cleared up much of my own
    confusion about mechanical (kroemer calls it kinetic momentum) and the
    canonical momentum (which is the mechanical momentum + the -eA term). it
    also has a section on gauge invariance in the same chapter. after reading
    that and re-listening to lecture 16 & 17 much of my confusion has
    disappeared. i won’t say i still understand it thoroughly, but this is a
    good start. the role of magnetic fields in QM is devilishly hard!

  4. collegev12 July, 2012 at 3:57 pm

    i have slowly worked myself up to this lecture and hope to continue. making
    extensive notes. the last lecture was tough going only because of gaps in
    my own knowledge of EM. i had to accept some of the starting premise
    regarding the relationship between canonical and mechanical momenta and the
    gauge invariance stuff (probably follows from maxwell’s equations). then i
    was able to follow along. good stuff. going to keep going.

  5. delameu28 November, 2011 at 10:49 pm

    i got a bit lost a couple lessons ago but this is way over my head

  6. Ganpatrao Aapte6 October, 2010 at 6:35 pm

    @lomje70 calms*

  7. Ganpatrao Aapte6 October, 2010 at 6:28 pm

    @lomje70 Its a good thing, calm your mind :p Something very necessary
    before the oncoming knowledge assault :p

  8. Mau Jo3 June, 2010 at 4:55 pm

    Check that out: he doesn’t even use notes. Wow! Thanks, Prof. Balakrishnan.

  9. cythobst14 July, 2009 at 12:58 pm

    was having the exact same thought 🙂

  10. lomje7024 May, 2009 at 1:42 am

    Thanks for this series, it’s fantastic. However, I now have the “Om” intro
    song stuck in my head.

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