Self-consistent Quantum-Field Theory and Bosonization for Strongly Correlated Electron Systems [Hardcover]

Self-consistent quantum-field theory.- Superconductivity and pairing of electrons in three dimensions.- Gauge transformation and bosonization.- Two-dimensional electron systems in the FQHE regime.- Further applications.This research monograph offers an introduction to advanced quantum field theoretical techniques for many-particle systems beyond perturbation theory. Several schemes for resummation of the Feynman diagrams are described. The resulting approximations are especially well suited for strongly correlated fermion and boson systems.
Also considered is the crossover from BCS superconductivity to Bose--Einstein condensation in fermion systems with strong attractive interaction. In particular, a field theoretic formulation of bosonization is presented; it is published here for the first time. This method is applied to the fractional quantum Hall effect, to the Coulomb plasma, and to several exactly solvable models.Includes the first published presentation of the field theoretical formulation of 'bosonisation' Includes supplementary material: sn.pub/extras