Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mean-field phase diagram of interacting e_g electrons   We investigate the magnetic phase diagram of the two-dimensional model for
e_g electrons which describes layered nickelates. One finds a generic tendency
towards magnetic order accompanied by orbital polarization. For two equivalent
orbitals with diagonal hopping such orbitally polarized phases are induced by
finite crystal field.

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The categories of this paper are: q-bio
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The categories of this paper are: cs
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The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
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The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
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The categories of this paper are: hep-th
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The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn