Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Threshold for Chaos and Thermalization in One-Dimensional Mean-Field
  Bose-Hubbard Model   We study the threshold for chaos and its relation to thermalization in the 1D
mean-field Bose-Hubbard model, which in particular describes atoms in optical
lattices. We identify the threshold for chaos, which is finite in the
thermodynamic limit, and show that it is indeed a precursor of thermalization.
Far above the threshold, the state of the system after relaxation is governed
by the usual laws of statistical mechanics.

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The categories of this paper are: cmp-lg
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The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
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The categories of this paper are: stat
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: chao-dyn
2
The categories of this paper are: math
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The categories of this paper are: econ
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The categories of this paper are: dg-ga
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
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The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci