Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum correlations as precursors of entanglement   We show that for two initially excited qubits, interacting via dipole forces
and with a common reservoir, entanglement is preceded by the emergence of
quantum and classical correlations. After a time lag, entanglement finally
starts building up, giving rise to a peculiar entangled state, with very small
classical correlations. Different measures of quantum correlations are
discussed, and their dynamics are compared and shown to lead to coincident
values of these quantifiers for several ranges of time.

33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
16
The categories of this paper are: stat