Fundamentals of Many-body Physics

1. Front Matter

   Pages I-X

   PDF

2. Second Quantisation

   • Wolfgang Nolting, William D. Brewer

   Pages 1-35

3. Many-BodyModel Systems

   • Wolfgang Nolting, William D. Brewer

   Pages 37-105

4. Green’s Functions

   • Wolfgang Nolting, William D. Brewer

   Pages 107-195

5. Systems of Interacting Particles

   • Wolfgang Nolting, William D. Brewer

   Pages 197-311

6. Perturbation Theory \((T = 0)\)

   • Wolfgang Nolting, William D. Brewer

   Pages 313-401

7. Perturbation Theory at Finite Temperatures

   • Wolfgang Nolting, William D. Brewer

   Pages 403-434

8. Back Matter

   Pages 435-602

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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”.

• Book advanced quantum mechanics
• Feynman diagrams
• Green's functions
• Interacting particles
• Many particle systems
• Matsubara technique
• Model description
• Particle correlations
• Quasiparticles;
• many body physics
• many body systems
• many particle physics

• Humboldt-Universitäat Berlin Institut fär Physik, Berlin, Germany

  Wolfgang Nolting

• FU Berlin FB Physik Inst. f. Experimentalphysik, Berlin, Germany

  William D. Brewer

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