Dear experts,
I do not fully understand the connection between initial state energy range and energy tolerance in e-ph coupling calculations. How do we choose energy tolerance set to 0.01 (eV) and the Initial state energy range to go from -0.5 to 0.5 in phonon-limited mobility in graphene using the Boltzmann transport equation tutorial. If we set energy tolerance to 0.1 or 1 eV what happens?
For example, if the phonon energy is 0.02 eV and the energy tolerance is set to 0.01 eV, the difference between the initial and final electronic states should be within 0.01 eV of 0.02 eV (i.e., between 0.01 eV and 0.03 eV) for the electron-phonon matrix element to be calculated. Is it true?