Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electronic structure beyond the generalized gradient approximation for
  Ni$_2$MnGa   The stability of the nonmodulated martensitic phase, the austenitic Fermi
surface and the phonon dispersion relations for ferromagnetic Ni$_2$MnGa are
studied using density functional theory. Exchange-correlation effects are
considered with various degrees of precision, starting from the simplest local
spin density approximation (LSDA), then adding corrections within the
generalized gradient approximation (GGA) and finally, including the meta-GGA
corrections within the strongly constrained and appropriately normed (SCAN). We
discuss a simple procedure to reduce a possible overestimation of magnetization
and underestimation of nesting vector in SCAN by parametrically decreasing
self-interaction corrections.

36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom