Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High-Pressure Hydrogen Sulfide by Diffusion Quantum Monte Carlo   We use the diffusion quantum Monte Carlo to revisit the enthalpy-pressure
phase diagram of the various products from the different proposed
decompositions of H$_2$S at pressures above 150~GPa. Our results entails a
revision of the ground-state enthalpy-pressure phase diagram. Specifically, we
find that the C2/c HS$_2$ structure is persistent up to 440~GPa before
undergoing a phase transition into the C2/m phase. Contrary to density
functional theory, our calculations suggest that the C2/m phase of HS is more
stable than the I4$_1$/amd HS structure over the whole pressure range from 150
to 400 GPa. Moreover, we predict that the Im-3m phase is the most likely
candidate for H$_3$S, which is consistent with recent experimental x-ray
diffraction measurements.

15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph