Can a State with Nonmeasurable Local Properties be Described by Quantum Rules?

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SUMMARY

The discussion centers on the representation of a quantum state defined as ##\frac{1}{\sqrt{2}}\left[\left(\begin{array}{c}1\\0\\0\end{array}\right)\left(\begin{array}{c}0\\1\end{array}\right)-\left(\begin{array}{c}1\\0 \end{array}\right)\left(\begin{array}{c}0\\0\\1\end{array}\right)\right]##, which combines properties of a spin-1 boson and a spin-1/2 particle. Participants question the local measurability of this state and explore the implications of treating it as a global 6x1 vector under standard quantum mechanics rules. The discussion highlights the need for clarity in notation and the importance of referencing established sources for better understanding.

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jk22
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If the state considered is :##\frac{1}{\sqrt{2}}\left[\left(\begin{array}{c}1\\0\\0\end{array}\right)\left(\begin{array}{c}0\\1\end{array}\right)-\left(\begin{array}{c}1\\0 \end{array}\right)\left(\begin{array}{c}0\\0\\1\end{array}\right)\right]##

It seems to me it were not locally measurable since it is a mixture of spin 1 boson with a spin 1/2 ?

However how about considering as a global 6x1 vector and apply usual quantum rules, would it make any sense ?
 
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This notation is totally unknown to me. Could you explain, what you mean by your symbols?
 
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A citation of your source might help, too.
 
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