Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: One-electron spectra and susceptibilities of 3D electron gas from
  self-consistent solutions of Hedin's equations   A few approximate schemes to solve the Hedin equations self-consistently
introduced in (Phys. Rev. B 94, 155101 (2016)) are explored and tested for the
3D electron gas at metallic densities. We calculate one electron spectra,
dielectric properties, compressibility, and correlation energy. Considerable
reduction in the calculated band width (as compared to the self consistent GW
result) has been found when vertex correction was used for both polarizability
and self energy. Generally, it is advantageous to obtain the diagrammatic
representation of polarizability from the definition of this quantity as a
functional derivative of the electronic density with respect to the total field
(external plus induced). For self energy, the first order vertex correction
seems to be sufficient for the range of densities considered. Whenever it is
possible, we compare the accuracy of our vertex-corrected schemes with the
accuracy of the self-consistent quasi-particle GW approximation (QSGW), which
is less expensive computationally. We show that QSGW approach performs poorly
and we relate this poor performance with an inaccurate description of the
screening in the QSGW method (with an error comprising a factor 2-3 in the
physically important range of momenta).

7
The categories of this paper are: hep-th
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph