All Questions
Tagged with non-locality operators
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Local fields in relativity with pure creation operators
The Wikipedia page on the Spin-Statistics theorem states that
In relativity, there are no local fields that are pure creation operators or annihilation operators.
In this answer at SE Phys, in a ...
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Is there any way to write a non-local operator nicely?
Consider the boundary(the real axis) of the 2d CFT or the D-brane. They were non local object but with well known description.
Consider the following expression,
$$\langle 0| \phi_1(z_1) \phi_2(z_2)|B\...
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Renormalization of non-local product of operators
In Unraveling hadron structure with generalized parton distributions by Belitsky and Radyushkin, appendix G, eq. (G.47) it is said that for renormalization of an on-local product of operators such as ...
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What does it mean for an extended operator to possess "local excitations"?
In the context of defect conformal field theory, we consider in operator product expansions "local excitations" of the defect (see e.g. text between eq. $(1.1)$ and $(1.2)$ in the paper ...
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Are there any nonlocal one-body operators?
In case I have a one-body operator given by
$$
\hat{O}=\int d^3r\int d^3r' \,\hat\psi^\dagger(\mathbf{r})\langle \mathbf{r}|\hat O|\mathbf{r}'\rangle\hat\psi(\mathbf{r}'),
$$
are there any operators ...
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What is a local operator in quantum mechanics?
In quantum mechanics, what exactly is meant by "local" operator?
What about a "global" or a "non-local" operator? Are these the same?
Can you also also help me understand what exactly is a local ...
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