Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamical pairwise entanglement and two-point correlations in the
  three-ligand spin-star structure   We consider the three-ligand spin-star structure through homogeneous
Heisenberg interactions (XXX-3LSSS) in the framework of dynamical pairwise
entanglement. It is shown that the time evolution of the central qubit
"one-particle" state (COPS) results in the generation of quantum W states at
periodical time instants. On the contrary, W states cannot be generated from
the time evolution of a ligand "one-particle" state (LOPS). We also investigate
the dynamical behavior of two-point quantum correlations as well as the
expectation values of the different spin-components for each element in the
XXX-3LSSS. It is found that when a W state is generated, the same value of
concurrence among all qubits arises from xx and yy two-point quantum
correlations. On the opposite, zz quantum correlation between any two qubits
vanishes at these time instants.

22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin