Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Theory of momentum-resolved phonon spectroscopy in the electron
  microscope   We provide a theoretical framework for the prediction and interpretation of
momentum dependent phonon spectra due to coherent inelastic scattering of
electrons. We complete the approach with first principles lattice dynamics
using periodic density functional theory and compare to recent electron energy
loss measurements on cubic and hexagonal boron nitride performed within a
scanning transmission electron microscope (STEM). The combination of theory and
experiment provides the ability to interpret momentum dependent phonon spectra
obtained at nanometer spatial resolution in the electron microscope.

17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph