I am a Senior Researcher at the Institute for Complex Systems, CNR. My main interest is complex solids intended as materials in which different phases compete, producing interesting collective behavior. Competition arises because interactions and kinetic energy contribute similarly to the energy. Therefore, complex solids are neither in the weak nor in the strong coupling regime, which makes them difficult to treat with conventional perturbative approaches. Competition between phases often leads to gigantic responses to external perturbations, which makes complex solids exciting for applications.