Math & Science ⇒ Math code in Footnotes that appear in text

[kaioh]

Hello I would like to do the following:

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... are not orthogonal\footnote{The two states $|0\rangle$ and $|1\rangle$ are
used to design Alice's measurement observables $\hat{C}_0$ and $\hat{C}_1$.}
$\langle 0|1 \rangle = \cos \theta$, with $\theta \in (0,\pi /2)$.

However I cannot use math code inside a footnote which is in text.
All solutions that I have found are for the use of footnotes inside equations, but thats not my case.

If someone can help me, I'd appreciate. (I'm using revtex4-1).

Regards.

[Stefan Kottwitz]

This code works in standard documents. However, REVTeX uses BibTeX for footnote, which causes an error here. You can fix it by enclosing the footnote text within additional braces, so protecting the inner part:

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\footnote{{The two states $|0\rangle$ ...}}

Stefan

[kaioh]

It works perfectly. Thank you so much.