Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dark matter-electron scattering in dielectrics   A number of direct detection experiments are searching for electron
excitations created by scattering of sub-GeV dark matter. We present an
alternate formulation of dark matter-electron scattering in terms of the
dielectric response of a material. For dark matter which couples to electrons,
this approach automatically accounts for in-medium screening effects, which
were not included in previous rate calculations for semiconductor targets. We
show that the screening effects appear for both scalar and vector mediators.
The result is a non-negligible reduction of reach for direct detection
experiments which use dielectric materials as targets. We also explore
different determinations of the dielectric response, including first-principles
density functional theory (DFT) calculations and a data-driven analytic
approximation using a Mermin oscillator model.

20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th