Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: X-ray spectroscopy of rare-earth nickelate LuNiO$_3$: LDA+DMFT study   We present a computational study of resonant inelastic x-ray scattering
(RIXS) and x-ray absorption in a representative rare-earth nickelate LuNiO$_3$.
We study the changes in the spectra across the
metal-insulator/site-disproportionation transition. In particular, we address
the question of site-selectivity of the two methods in the disproportionated
insulating phase and the signature of metal-insulator transition in the
fluorescence-like feature of the RIXS spectra. To this end we use the local
density approximation + dynamical mean-field theory (LDA+DMFT) approach
combined with configuration integration method to compute the core-level
spectra.

14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin