Tagged Questions
6
votes
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What is the physical meaning of weak expectation values?
In the two-state formalism of Yakir Aharanov, the weak expectation value of an operator $A$ is $\frac{\langle \chi | A | \psi \rangle}{\langle \chi | \psi \rangle}$. This can have bizarre properties. ...
3
votes
2answers
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QM: Expectation value of x*p <xp>, how interpret?
$xp$ is not a hermitian operator and hence doesn't represent an observable. Then, how can we interpret the expression
$$
\langle x p \rangle \text{,}
$$
the expectation value of position times ...
