Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hole-$s_{\pm}$ State Induced by Coexisting Ferro- and Aniferromagnetic
  and Aniferro-orbital Fluctuations in the Iron Pnictides   The multi-orbital Hubbard model is investigated in order to clarify the
electron correlation effects and the superconductivity in the iron-based
superconductor. The renormalization effects on the self-energy and the
two-particle irreducible vertex function are calculated on the basis of the
dynamical mean field theory. We find that the vertex function exhibits a strong
renormalization with the significant orbital dependence as compared with the
renormalization factor, when the antiferromagnetic and the antiferro-orbital
fluctuations are comparably enhanced due to the electron and the hole Fermi
surfaces nesting effects. The orbital-dependent vertex function together with
the $q\sim0$ nesting between the two-hole Fermi surfaces results in the
inter-orbital ferromagnetic fluctuation gradually enhanced which is expected to
be observed in LiFeAs. We show that the hole-$s_{\pm}$-wave superconductivity
with the sign change of the two-hole Fermi surfaces is realized by the enhanced
ferromagnetic fluctuation accompanied by the antiferromagnetic fluctuation and
the antiferro-orbital fluctuation.

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The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg