Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Distance between quantum states in presence of initial qubit-environment
  correlations: a comparative study   The time evolution of the trace distance between two states of an open
quantum system may increase due to initial system-environment correlations,
thus exhibiting a breakdown of distance contractivity of the reduced dynamics.
We analyze how the time evolution of the distance depends on the chosen
distance measure. Here we elucidate the behavior of the trace distance, the
Hilbert- Schmidt distance, the Bures distance, the Hellinger distance and the
quantum Jensen-Shannon divergence for two system-environment setups, namely a
qubit bi-linearly coupled to an infinite and a finite size environment with the
latter composed of harmonic oscillators.

37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol