Wednesday, August 10, 2011

Theory Update 100

Kostant's $e_8$ algebra is clearly about qubits and qutrits. One considers the qubit cube $Z_{2}^{5}$, corresponding to the field $F_{32}$ with $32$ elements. This sits inside the $2 \times 2$ matrix group $SL(2,F_{32})$, conveniently in the form which is used for braids in emergent geometry. A $32$ dimensional information space could be a plane over the bioctonions. Triality also appears, because $248 = 192 + 56$.

7 comments:

  1. And recall that the oft appearing number $288 = 2^{5} 3^{2}$ satisfies $1/288 = 0.0035$. This is a parameter in the (triality respecting) form of the CKM quark mixing matrix. The other $2$ parameters are $24$ and $-0.231$.

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  2. And remember that there are three nice ways to place a $2 \times 2$ matrix inside a $3 \times 3$ one, as in the tripling of spin for the generation quantum number, resulting in the Koide relations for particle masses.

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  3. Marni, the link you provided to Konstant is also about John Baez talking about Garrett's e8. But his model has lots of higg's fairy fields, as you call them. Isn't that a bad thing?

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  4. Daniel, if you read two paragraphs of one of my papers, you would know that I have never, in any way or form, advocated a Lisi model. Lisi did not invent the Lie group $E_8$. Read the Kostant paper.

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  5. By which I mean to say, mathematics is one thing and physics is another thing entirely. As kneemo has often pointed out, we need a $57$ dimensional picture for $E_8$ (in its Jordan algebra guise). This can be $57=56+1$, but observe that we also have $57-3 = 54$ with $54$ the $CO$ dimension, and the $54$ can be split into three lots of $18$ so that there is a nice $3 \times 3$ packaging for the $57$ dimensions.

    Oops, must correct the post then. Done.

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  6. Kea,

    In case you have not seen it my new graphs have reached many of the same number relations although I don't see how people do it without a picture.

    In retrospect the idea of mass and fairy fields and SUSY seem a small part of the concepts- not to those bloggers with sensible imaginations. I like to count the empty spaces also.

    The PeSla

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  7. Yes, ThePeSla, one should always aim for a viewpoint from which everything one was taught at school is but a small mound in the landscape below.

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