Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamics of tripartite correlations for three qubits in independent
  thermal reservoirs   We investigate the dynamical evolution of multipartite entanglement in
tripartite systems with three qubits present in independent thermal reservoirs,
modelled as infinite set of quantum harmonic oscillators. We show that the
presence of temperature gradient between reservoirs play a significant role in
robustness of multipartite correlation against environmental decoherence.
Considering a bilinear form of interaction Hamiltonian, an exact expression for
time evolved density matrix is presented. Interestingly, it is observed that
the preservation duration of genuine multipartite concurrence for GHZ class
Werner state increases as the temperature gradient between reservoirs are
increased. However, this increase is non-linear and the preservation duration
is shown to saturate for large temperature gradients. It is also observed that,
for large temperature gradient, there are multiple intervals in which coherence
and consequently the tripartite negativity shows robustness (freezing of
correlation) against the environmental decoherence for W class Werner states.
For the common temperature case, we show that the genuine multipartite
concurrence for the GHZ class Werner state decays irreversibly, and the state
experiences correlation sudden death, with a rate dependent on spectral density
of the reservoirs under consideration. For the Ohmic reservoirs at low
temperature, we observe that the state retains initial multipartite correlation
upto a characteristic time and then sharply decays to zero with a correlation
sudden death. We further investigate the dynamics of tripartite negativity and
$l_{1}$ norm of coherence in the W class Werner states, and show irreversible
degradation in these correlations.

25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat