Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Slave Boson Theory of Orbital Differentiation with Crystal Field
  Effects: Application to UO$_2$   We derive an exact operatorial reformulation of the rotational invariant
slave boson method and we apply it to describe the orbital differentiation in
strongly correlated electron systems starting from first principles. The
approach enables us to treat strong electron correlations, spin-orbit coupling
and crystal field splittings on the same footing by exploiting the gauge
invariance of the mean-field equations. We apply our theory to the archetypical
nuclear fuel UO$_2$, and show that the ground state of this system displays a
pronounced orbital differention within the $5f$ manifold, with Mott localized
$\Gamma_8$ and extended $\Gamma_7$ electrons.

31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex