Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ground-state entanglement of spin-1 bosons undergoing superexchange
  interactions in optical superlattices   We discuss a model with ultra-cold atoms confined in optical superlattices.
In particular, we study the ground-state properties of two spin-1 bosons
trapped in a double-well potential. Depending on the external magnetic field
and biquadratic interactions different phases of magnetic order are realized.
Applying von Neumann entropy and number of relevant orbitals, we quantify the
bipartite entanglement between particles. Changing the values of the parameters
determining superlattices, we can switch the system between differently
entangled states.

23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
3
The categories of this paper are: physics