摘要: A system of fermions on a one-dimensional lattice, subject to a periodicpotential whose period is incommensurate with the lattice spacing and verifies a diophantine condition, is studied. The Schwinger functions are obtained, and ... 展开 A system of fermions on a one-dimensional lattice, subject to a periodicpotential whose period is incommensurate with the lattice spacing and verifies a diophantine condition, is studied. The Schwinger functions are obtained, and their asymptotic decay for large distances is exhibited for values of the Fermi momentum which are multiple of the potential period. 收起