Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mixing-Demixing transition in 1D boson-fermion mixture at low fermion
  densities   We numerically investigated the mixing-demixing transition of the
boson-fermion mixture on a 1D lattice at an incommensurate filling with the
fermion density being kept below the boson density. The phase diagram we
obtained suggested that the decrease of the number of the fermions drove the
system into the demixing phase.

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The categories of this paper are: supr-con
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: math
1
The categories of this paper are: cs
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The categories of this paper are: patt-sol
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-alg
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The categories of this paper are: physics
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The categories of this paper are: hep-th
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The categories of this paper are: nlin
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The categories of this paper are: funct-an
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The categories of this paper are: hep-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: plasm-ph