Recent content by yicong2011

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    Graduate How to interpret the field function Φ in QFT?

    Hi, I have a question that how to interpret the field function Φ in Quantum Field Theory. As I can see, it is an operator through second quantization and the co-ordinate representation no long exist after second quantization. So we cannot regard it as wave function any more. Could...
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    Graduate What would be the pre-requisites to learn Topological Quantum Field Theory?

    Thank you very much. I am thinking about my future research interest: mathematical relativity, topological QFT, conformal field theory, and maybe statistical physics...
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    Graduate What would be the pre-requisites to learn Topological Quantum Field Theory?

    Personally, I am interested in Topological Quantum Field Theory. And now I am battling against Quantum Field Theory. I am not sure how much Quantum Field Theory is needed to do Topological Quantum Field Theory. And I am not sure what should be the mathematical pre-requisites of Topological...
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    Graduate What is internal space/internal symmetry?

    How about SU(3), SU(5)? Are they all internal symmetry?
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    Graduate What is internal space/internal symmetry?

    One of my questions has been resolved. Spin is considered in angular momentum term, so it should have spacetime variation. Thus, it is in exterior symmetry.
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    Graduate What is internal space/internal symmetry?

    Hi, I have already been familiar with that exterior symmetry is the spacetime symmetry. Such kind of symmetry has been depicted by Poincare' group. Then I am still find the concept internal space/internal symmetry ambiguous. And I cannot understand why put Spin in exterior symmetry not...
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    Graduate Discovering the Role of the Little Group in Quantum Field Theory

    Ah, Thanks a lot, guys. Thanks for glorious detail explanation.
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    Graduate Discovering the Role of the Little Group in Quantum Field Theory

    What is "Little Group"? In my Quantum Field Theory class, I too often meet with the term "Little Group". Unfortunately, I cannot find a good description of Little Group until now. I just know it is a subgroup of Lorentz Group. Can anyone have any brief description of this concept? Or any...
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    List: texts/ideas for BS math/phy to grad school

    A serious student in theoretical physics program should look into John Baez's reading list. http://math.ucr.edu/home/baez/books.html Also anyone could find a lovely tutorial material on General Relativity on John Baez's website.
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    List: texts/ideas for BS math/phy to grad school

    << unnecessary complete quote of preceding post deleted >> Thank you very much. I should say sorry. But I think your recommendation is oriented to experimentalists or applied physicists.
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    List: texts/ideas for BS math/phy to grad school

    << unnecessary complete quote of preceding post deleted >>Thank you very much. I should say sorry.
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    Please recommend differential geometry books

    Why not pay attention to John Baez's Recommendation? http://math.ucr.edu/home/baez/books.html
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    Looking for books on group theory and differential geometry

    Don't get disappointed. Why not look into John Baez's Reading Guide? http://math.ucr.edu/home/baez/books.html
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    A syllabus of books/literature from calculus to group theory to QFTs

    I think you are in a wrong drama. We can always find a streamlined structure of modern theory. And we can always find short-cut into our cutting edge research. Sometimes those stuffs are only for historical interest. You are wasting your time in advertising those books. For those want to...
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    Good physics books for mathematicians

    I am so happy you want to enrich your physics background. You may benefit from this attempt. Why not look into John Baez's Reading List. http://math.ucr.edu/home/baez/books.html