Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Local hidden-variable model for a recent experimental test of quantum
  nonlocality and local contextuality   An experiment has recently been performed to demonstrate quantum nonlocality
by establishing contextuality in one of a pair of photons encoding four qubits;
however, low detection efficiencies and use of the fair-sampling hypothesis
leave these results open to possible criticism due to the detection loophole.
In this Letter, a physically motivated local hidden-variable model is
considered as a possible mechanism for explaining the experimentally observed
results. The model, though not intrinsically contextual, acquires this quality
upon post-selection of coincident detections.

18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol