Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A direct test for instantaneous collapse of wave functions in
  configuration space   Wavefunction collapse is a puzzling aspect of quantum mechanics. Designing a
test to confirm the instantaneousness of collapse has turned out to be
challenging, especially for collapse in configuration space. We propose a test
using two identical, non-local, correlated photons in an interferometer in
which a post-selection measurement of one of the photons in its location
changes the statistical behavior of the other photon, which is an arbitrarily
large distance away, and thus its detectable subsequent behavior. Analysis of
the resulting correlations constitutes a test of the instantaneousness (or
non-instantaneousness) of collapse. Connections to some of the recent proposed
models of collapse are discussed

5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int