Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: EPW: Electron-phonon coupling, transport and superconducting properties
  using maximally localized Wannier functions   The EPW (Electron-Phonon coupling using Wannier functions) software is a
Fortran90 code that uses density-functional perturbation theory and maximally
localized Wannier functions for computing electron-phonon couplings and related
properties in solids accurately and efficiently. The EPW v4 program can be used
to compute electron and phonon self-energies, linewidths, electron-phonon
scattering rates, electron-phonon coupling strengths, transport spectral
functions, electronic velocities, resistivity, anisotropic superconducting gaps
and spectral functions within the Migdal-Eliashberg theory. The code now
supports spin-orbit coupling, time-reversal symmetry in non-centrosymmetric
crystals, polar materials, and $\mathbf{k}$ and $\mathbf{q}$-point
parallelization. Considerable effort was dedicated to optimization and
parallelization, achieving almost a ten times speedup with respect to previous
releases. A computer test farm was implemented to ensure stability and
portability of the code on the most popular compilers and architectures. Since
April 2016, version 4 of the EPW code is fully integrated in and distributed
with the Quantum ESPRESSO package, and can be downloaded through QE-forge at
http://qe-forge.org/gf/project/q-e.

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The categories of this paper are: math
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The categories of this paper are: stat
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The categories of this paper are: nucl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: bayes-an
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The categories of this paper are: cs
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The categories of this paper are: dg-ga
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The categories of this paper are: econ
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The categories of this paper are: funct-an
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The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con
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The categories of this paper are: atom-ph
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The categories of this paper are: eess
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The categories of this paper are: q-fin
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The categories of this paper are: hep-ex