This textbook addresses the special physics of many-particle systems, especially those dominated by correlation effects. It develops modern methods to treat such systems are developed and demonstrates their application through numerous appropriate exercises.

The goal of the present course on Fundamentals of Theoretical Physics is to be a direct accompaniment to the lower-division study of physics, and it aims at providing the ph- ical tools in the most straightforward and compact form as needed by the students in order to master theoretically more complex topics and problems in advanced studies and in research. The presentation is thus intentionally designed to be suf?ciently detailed and self-contained sometimes, admittedly, at the cost of a certain elegance to permit in- vidual study without reference to the secondary literature. This volume deals with the quantum theory of many-body systems. Building upon a basic knowledge of quantum mechanics and of statistical physics, modern techniques for the description of interacting many-particle systems are developed and applied to various real problems, mainly from the area of solid-state physics. A thorough revision should guarantee that the reader can access the relevant research literature without experiencing major problems in terms of the concepts and vocabulary, techniques and deductive methods found there. The world which surrounds us consists of very many particles interacting with one another, and their description requires in principle the solution of a corresponding number ofcoupledquantum-mechanicalequationsofmotion(Schrodinger ¨ equations),which,h- ever, is possible only in exceptional cases in a mathematically strict sense. The concepts of elementary quantum mechanics and quantum statistics are therefore not directly applicable in the form in which we have thus far encountered them. They require an extension and restructuring, which is termed many-body theory.

Numerous exercises with full solutions Useful for beginners as well as researchers Nolting has bestselling German language textbook series on Theoretical Physics Includes supplementary material: sn.pub/extras

Autorentext

Prof. Dr. Wolfgang Nolting arbeitet auf dem Gebiet der Festkörpertheorie an der Humboldt-Universität zu Berlin.

Inhalt
Second Quantisation.- Many-BodyModel Systems.- Green's Functions.- Systems of Interacting Particles.- Perturbation Theory .- Perturbation Theory at Finite Temperatures.