Thursday, November 4, 2010

Self Completeness

More leading stringers appear to have abandoned String Theory for interesting ideas. First there was Verlinde and now, as mentioned by Resonaances, there is a classicalisation paper by Dvali et al. I have not read it, but I just enjoyed a very nice talk by one of the authors, Cesar Gomez, starting with a heuristic discussion of minimal lengths, generalised uncertainty principles and a UV/IR correspondence.

He briefly mentions deeper holographic principles, underlying their basic idea of automatic creation of classical black hole states in the localisation of energy as a fairy free unitarisation mechanism. Question time included a lovely comment on the quantum classical transition as a domain for mass quantum number generation, which Nature now tells us should centre on neutral particles.

5 comments:

  1. This week I am thinking about a neutral particle with a U(1) electromagnetic gauge symmetry. Specifically, about building a supermultiplet (two scalars and a fermion component) with electric quantum number non zero. Should it be neutral? Should the fermion be neutral and the scalar charged, but massive? Does mass help, at all?

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  2. Yes, this is very fascinating. And it also must mean that the fine structure constant is not constant at all. And maybe that the symmetry is built from scratch. I wonder what the tool-intervals may be? Why do the different forces look like they do? Primes? You have come on something really big, Kea.

    Look at picture http://www.nature.com/nature/journal/v468/n7320/full/468040a.html

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  3. Ulla, I think one should keep alpha constant. The physical picture is nicer when one varies other constants - say $e$ and $\hbar$. I will post on this ...

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  4. Sounds interesting. You have changed your mind? Nice.
    This will be great science.

    Alejandro, no mass, geometry instead, area.

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  5. No, Ulla, I have NOT changed my mind about this. If you really want to understand the position, you need to spend several years studying older posts and papers.

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