Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Phase competition in frustrated anisotropic antiferromagnet in strong
  magnetic field   We discuss theoretically a frustrated Heisenberg antiferromagnet in magnetic
field close to the saturation one. It is demonstrated that a small biaxial
anisotropy and/or the magnetic dipolar interaction produce a delicate balance
between phases with a commensurate canted, incommensurate helical (conical),
and fan spin orderings. As a result, different sequences of phase transitions
are realized depending on values of these small anisotropic interactions. We
derive analytical expressions for critical fields and ground-state energies of
the phases which are in a quantitative agreement with our and previous
Monte-Carlo simulations.

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The categories of this paper are: nucl-ex
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The categories of this paper are: mtrl-th
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The categories of this paper are: stat
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The categories of this paper are: physics
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The categories of this paper are: econ
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The categories of this paper are: acc-phys
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The categories of this paper are: dg-ga
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The categories of this paper are: adap-org
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The categories of this paper are: math-ph
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-th
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The categories of this paper are: cs
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The categories of this paper are: q-fin
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The categories of this paper are: cmp-lg
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-th