The elphbolt ab initio solver for the coupled electron-phonon Boltzmann transport equations

elphbolt is a modern Fortran (2018 standard) code for efficiently solving the coupled electron-phonon Boltzmann transport equations from first principles. Using results density functional and perturbation theory as inputs, it can calculate effect of non-equilibrium phonons on electronic (phonon drag) electrons phononic (electron in fully self-consistent manner obeying constraints mandated by thermodynamics. It lattice, charge, thermoelectric coefficients temperature gradient electric fields, mutual drag these properties. The exploits symmetries crystal transport-active window to allow sampling extremely fine electron phonon wave vector meshes required accurately capturing phenomena. coarray feature Fortran, which offers native convenient support parallelization, utilized. compact, readable, well-documented, extensible design.