Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Amplification, Decoherence, and the Acquisition of Information by Spin
  Environments   Quantum Darwinism recognizes the role of the environment as a communication
channel: Decoherence can selectively amplify information about the pointer
states of a system of interest (preventing access to complementary information
about their superpositions) and can make records of this information accessible
to many observers. This redundancy explains the emergence of objective,
classical reality in our quantum Universe. Here, we demonstrate that the
amplification of information in realistic spin environments can be quantified
by the quantum Chernoff information, which characterizes the distinguishability
of partial records in individual environment subsystems. We show that, except
for a set of initial states of measure zero, the environment always acquires
redundant information. Moreover, the Chernoff information captures the rich
behavior of amplification in both finite and infinite spin environments, from
quadratic growth of the redundancy to oscillatory behavior. These results will
considerably simplify experimental testing of quantum Darwinism, e.g., using
nitrogen vacancies in diamond.

22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph