Rudolf Haussmann Knihy

Includes the first published presentation of the field theoretical formulation of 'bosonisation' Includes supplementary material: sn. pub/extras

Advanced quantum field theoretical techniques for many-particle systems are explored in this research monograph, focusing on methods that extend beyond perturbation theory. It details various resummation schemes for Feynman diagrams, providing approximations particularly effective for strongly correlated fermion and boson systems. The work serves as a valuable resource for researchers seeking to deepen their understanding of complex interactions in quantum systems.