Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On Time in Quantum Physics   First, I briefly review the different conceptions of time held by three rival
interpretations of quantum theory: the collapse of the wave-packet, the
pilot-wave interpretation, and the Everett interpretation (Section 2).
  Then I turn to a much less controversial task: to expound the recent
understanding of the time-energy uncertainty principle, and indeed of
uncertainty principles in general, that has been established by such authors as
Busch, Hilgevoord and Uffink.
  Although this may at first seem a narrow topic, I point out connections to
other conceptual topics about time in quantum theory: for example, the question
under what circumstances there is a time operator (Section 4.3).

32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an