Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exact quantum dynamics of a bosonic Josephson junction   The quantum dynamics of a one-dimensional bosonic Josephson junction is
studied by solving the time-dependent many-boson Schr\"odinger equation
numerically exactly. Already for weak interparticle interactions and on short
time scales, the commonly-employed mean-field and many-body methods are found
to deviate substantially from the exact dynamics. The system exhibits rich
many-body dynamics like enhanced tunneling and a novel equilibration phenomenon
of the junction depending on the interaction, attributed to a quick loss of
coherence.

15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th