Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strong thermalization of the two-component Bose-Hubbard model at finite
  temperatures   We study thermalization of a two-component Bose-Hubbard model by exact
diagonalization. Initially the two components do not interact and are each at
equilibrium but with different temperatures. As the on-site inter-component
interaction is turned on, perfect thermalization occurs. Remarkably, not merely
those simple "realistic" physical observables thermalize but even the density
matrix of the \textit{whole} system---the time-averaged density matrix of the
system can be well approximated by that of a canonical ensemble. A conjecture
about this fact is put forward.

16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
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The categories of this paper are: q-bio
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The categories of this paper are: econ
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
19
The categories of this paper are: eess