M Theory Lesson 254
Dave at Carl's blog has pointed out that
$\textrm{cos} (\theta) = \frac{2 \sqrt{2}}{\sqrt{9}}$
where $\theta$ is the sum of row (or column) entries in the circulant decomposition of the tribimaximal mixing matrix. In M Theory, we are used to coming across this number $2/9$. For example, it appears as a determinant,
$\frac{2}{9} = 1 - (\frac{1}{\sqrt{3}} + \frac{2}{3} i)(\frac{1}{\sqrt{3}} - \frac{2}{3} i)$
in the 2D component of the transform of the tribimaximal mixing matrix. The number
$\frac{1}{\sqrt{3}} + \frac{2}{3}$
also appears in the 2D component of $| R_3 R_2 |$, a MUB analogue of the (absolute value of) the tribimaximal matrix. That is, this number is a normalised form of $(1 + i \omega^2)$, where $\omega$ is the usual cubed root of unity.
$\textrm{cos} (\theta) = \frac{2 \sqrt{2}}{\sqrt{9}}$
where $\theta$ is the sum of row (or column) entries in the circulant decomposition of the tribimaximal mixing matrix. In M Theory, we are used to coming across this number $2/9$. For example, it appears as a determinant,
$\frac{2}{9} = 1 - (\frac{1}{\sqrt{3}} + \frac{2}{3} i)(\frac{1}{\sqrt{3}} - \frac{2}{3} i)$
in the 2D component of the transform of the tribimaximal mixing matrix. The number
$\frac{1}{\sqrt{3}} + \frac{2}{3}$
also appears in the 2D component of $| R_3 R_2 |$, a MUB analogue of the (absolute value of) the tribimaximal matrix. That is, this number is a normalised form of $(1 + i \omega^2)$, where $\omega$ is the usual cubed root of unity.
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