Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Inelastic X-ray scattering studies of phonon dispersions in
  superconductors at high pressures   Electron-phonon interaction is of central importance for the electrical and
heat transport properties of metals, and is directly responsible for
charge-density-waves or (conventional) superconducting instabilities. The
direct observation of phonon dispersion anomalies across electronic phase
transitions can provide insightful information regarding the mechanisms
underlying their formation. Here, we review the current status of phonon
dispersion studies in superconductors under hydrostatic and uniaxial pressure.
Advances in the instrumentation of high resolution inelastic X-ray scattering
beamlines and pressure generating devices allow these measurements to be
performed routinely at synchrotron beamlines worldwide.

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The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc