Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A "hidden" transition in heavy fermion compound CeB$_{6}$ at $T\sim$ 20
  K?   The temperature-dependent electronic structures of heavy fermion compound
CeB$_{6}$ are investigated thoroughly by means of the combination of density
functional theory and single-site dynamical mean-field theory. The band
structure, density of states, and 4$f$ valence state fluctuation of CeB$_{6}$
are calculated in a broad temperature range of 10 $\sim$ 120 K. Overall, the
4$f$ electrons remain incoherent, approximately irrespective of the
temperature. However, we find that these observables exhibit some unusual
features near 20 K. In addition, the evolution of 4$f$ orbital occupancy, total
angular momentum, and total energy with respect to temperature shows apparent
singularity around 20 K. We believe that these tantalizing characteristics are
probably related to a "hidden" electronic transition.

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The categories of this paper are: chao-dyn
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The categories of this paper are: dg-ga
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The categories of this paper are: econ
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The categories of this paper are: funct-an
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The categories of this paper are: plasm-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ex
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The categories of this paper are: physics
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The categories of this paper are: cmp-lg
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The categories of this paper are: bayes-an
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The categories of this paper are: astro-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: stat
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-ex