Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bounds on nonlocal correlations in the presence of signaling and their
  application to topological zero modes   Bell's theorem renders quantum correlations distinct from those of any
local-realistic model. Although being stronger than classical correlations,
quantum correlations are limited by the Tsirelson bound. This bound, however,
applies for Hermitian, commutative operators corresponding to non-signaling
observables in Alice's and Bob's spacelike-separated labs. As an attempt to
explore theories beyond quantum mechanics and analyze the uniqueness of the
latter, we examine in this work the extent of non-local correlations when
relaxing these fundamental assumptions, which allows for theories with
non-local signaling. We prove that, somewhat surprisingly, the Tsirelson bound
in the Bell-Clauser-Horne-Shimony-Holt scenario, and similarly other related
bounds on non-local correlations, remain effective as long as we maintain the
Hilbert space structure of the theory. Furthermore, in the case of Hermitian
observables we find novel relations between non-locality, local correlations,
and signaling. We demonstrate that such non-local signaling theories are
naturally simulated by quantum systems of parafermionic zero modes. We
numerically study the derived bounds in parafermionic systems, confirming the
bounds' validity yet finding a drastic difference between correlations of
'signaling' and 'non-signaling' sets of observables. We also propose an
experimental procedure for measuring the relevant correlations.

14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
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The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
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The categories of this paper are: cmp-lg
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The categories of this paper are: supr-con
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The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex