Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: What is a quantum-mechanical 'weak value' the value of?   A so called 'weak value' of an observable in quantum mechanics (QM) may be
obtained in a weak measurement + post-selection procedure on the QM system
under study. Applied to number operators, it has been invoked in revisiting
some QM paradoxes (e.g., the so called Three Box paradox and Hardy s paradox).
This requires the weak value to be interpreted as a bona fide property of the
system considered, a par with entities like operator mean values and
eigenvalues. I question such an interpretation; it has no support in the basic
axioms of quantum mechanics and it leads to unreasonable results in concrete
situations.

3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an