Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Relativistic Causality vs. No-Signaling as the limiting paradigm for
  correlations in physical theories   The no-signaling constraints state that the probability distribution of the
outputs of any subset of parties is independent of the inputs of the
complementary set; here we re-examine these to see how they arise from
relativistic causality. We show that while the usual no-signaling constraints
are sufficient, in general they are not necessary to ensure that a theory does
not violate causality. Depending on the exact space-time coordinates of the
measurement events in a multi-party Bell experiment, causality only imposes a
subset of the usual no-signaling conditions. After revisiting the derivation of
the two-party no-signaling constraints, we consider the three-party Bell
scenario and characterise a space-time region in which a subset of the
no-signaling conditions is sufficient to preserve causality. Secondly, we
examine the implications for device-independent cryptography against an
eavesdropper constrained only by the laws of relativity. We show an explicit
attack in certain measurement configurations on a family of protocols based on
the n-party Mermin inequalities that were previously proven secure under the
old no-signaling conditions. We then show that security of two-party protocols
can also be compromised when the eavesdropper's measurement configuration is
not constrained. The monogamy of non-local correlations that underpin their use
in secrecy can also be broken in certain space-time configurations. Thirdly, we
inspect the notion of free-choice and propose a definition of free-choice in
the multi-party Bell experiment. We then re-examine the question whether
quantum correlations may admit explanations by finite speed superluminal
influences. Finally, we study genuine multiparty non-locality and present a new
class of causal bilocal models. We propose a new Svetlichny-type inequality
that is satisfied by the causal bilocal model and show its violation within
quantum theory.

12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga