Theory of strong electron-phonon superconductivity for MgB2 in the framework of two-band model

Using strong coupling Eliashberg formalism for a two-band model, the superconductivity in MgB2 is analyzed. We calculated the temperature dependence for physical quantities of relevant importance for understanding the superconductivity mechanism in this simple compound. We performed calculations for the order parameter, density of states and spin relaxation. Our theoretical results are in agreement with the experimental data available