Unitarity in periodic potentials: A renormalization group analysis
Unitarity in periodic potentials: A renormalization group analysis
We explore the universal properties of interacting fermionic lattice systems, mostly focusing on the development of pairing correlations from attractive interactions. Using renormalization group, we identify a large number of fixed points and show that they correspond to resonant scattering in multiple channels. Pairing resonances in finite-density band insulators occur …