Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Level-crossing induced spin phenomena in SiC: a theoretical study   A theoretical approach is proposed to treat the spin dynamics in defect color
centers. The method explicitly takes into account the spin dynamics in the
ground state and excited state of the defect center as well as spin state
dependent transitions involving the ground state and excited state, as well as
an additional intermediate state. The proposed theory is applied to treat
spin-dependent phenomena is silicon carbide, namely, in spin-3/2
silicon-vacancy centers, VSi or V2 centers. Theoretical predictions of magnetic
field dependent photoluminescence intensity and optically detected magnetic
resonance spectra demonstrate an important role of level crossing phenomena in
the spin dynamics of the ground state and excited state. The results are in
good agreement with previously published experimental data [Phys. Rev. X, 6
(2016) 031014].

14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an