Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sudden change in quantum and classical correlations and the Unruh effect   We use the Unruh effect to analyze the dynamics of classical and quantum
correlations for a two-qubit system when one of them is uniformly accelerated
for a finite amount of proper time. We show that the quantum correlation is
completely destroyed in the limit of infinite acceleration, while the classical
one remains nonzero. In particular, we show that such correlations exhibit the
so-called sudden-change behavior as a function of acceleration. Eventually, we
discuss how our results can be interpreted when the system lies in the vicinity
of the event horizon of a Schwarzschild black hole.

32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat