Effective field theory and many-body theory

Effective field theory and many-body theory


Achim Schwenk
S2|11 205, Tel. -21550
Office hour (via zoom): Thursdays 13:00-14:00

This course will give an introduction to effective field theories and the physics of many-body systems, with special attention to modern concepts and to applications ranging from cold atoms to nuclei, neutron stars and condensed matter systems.


  • Zoom link for lectures and office hour, as well as links to video recording will be sent via TUCAN messages.
  • If you are interested in joining the lectures, please register in TUCAN or contact me by email.
  • There are no stupid questions. Please let us know if something can be improved.


  1. Introduction
  2. Effective field theory and renormalization
    Lecture April 13, April 16, April 20, April 23 (uncommented notes), April 27, May 04
  3. Universality and cold atoms
    Lecture May 04, May 07
  4. Review of second quantization and applications
    Lecture May 11, May 18, May 21, May 25
  5. Path integrals and many-body partition function
    Lecture June 01, June 08
  6. Perturbation theory, Feynman rules and applications
  7. Superconductivity, BCS theory and Nambu-Gorkov formalism
  8. Fermi liquid theory


Exercise groups (approx. biweekly)

Participation and problem solving are essential for understanding the material.

AFri, 9:50-11:30Matthias Heinz


Recommended textbooks:
  • Chapters 4-7 of the course will follow: A. Altland and B. Simons, Condensed Matter Field Theory, Cambridge University Press, 2nd Edition, 2010. (Available as ebook in the library.)
  • Additional literature will be provided in the lecture.
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