Renormalization Group Technique for Quasi-One-Dimensional Interacting Fermion Systems at Finite Temperature

摘要: We review some aspects of the renormalization group method for interacting fermions. Special emphasis is placed on application scaling theory to quasi-one-dimensional systems at nonzero temperature. begin by introducing ansatz purely one-dimensional fermion and its extension when interchain coupling dimensionality crossovers are present finite Next, we technique electron gas model clarify peculiarities two-loop level. The influence then included results crossover phenomenology multiplicity characteristic energy scales summarized. emergence Kohn-Luttinger mechanism in electronic structures discussed both superconducting density-wave channels.