Condensed Matter Theory 2

summer term 2019
Lecturer: Haverkort
Link to LSF
9 participants

Lecture contents

Introduction to solid state physics II. The complexity of 1023 particles interacting with each other in a solid gives rise to many emergent phenomena one would not predict from the simple interactions between two electrons. In this lecture we will, starting from simple models and theories work our way into the contemporary theory of many particle physics.

Where Condensed Matter Theory I (in the winter semester) focused on theories based on indepdendent electrons this lecture will focus on theories treating the electron Coulomb interaction explicitly.

Concepts of many particle systems discused are:

  • Computational complexity
  • Hubbard model
  • Mott Hubbard and charge transfer insulators
  • Resoponse functions
  • Quasi particles
  • Kondo excitations
  • Heavy fermion metals
  • Relativistic corrections - spin-orbit coupling
  • Magnetism
  • Superconductivety

Theoretical / Mathematical tools used will be

  • Second quantization
  • Exact diagonalization
  • Green's functions 
  • Self energy

Levels of theory discussed will be

  • Crystal field theory
  • Ligand field theory
  • Anderson impurity model
  • Mean field theory (Hartree-Fock and Density functional theory within the local density approximation)
  • Dynamical mean field theory
  • Diagramatic expansions

Exercise sheets

Practice groups

Assumed background

It is assumed students have successfully finnesed the following lectures

  • Theoretical Statistical Physics

  • Experimentalphysic V - Molekül- und Festkörperphysik

  • Condensed Matter Theory I

and have a decent knowledge on the theories described in 

  • Ashcroft / Mermin 
    Solid State Physics

  • Kittel 
    Introduction to Solid State Physics

Recommended literature

  • Ashcroft / Mermin
    Solid State Physics

  • Kittel
    Introduction to Solid State Physics

  • Mattuck
    A guide to Feynman Diagrams in the Many-Body Problem

  • E.N. Economou
    Green's Functions in Quantum Physics

  • C.J. Ballhausen
    Introduction to ligand field theory

The lecturenotes will be made available as the lecture progressess, they however should not be your only source of information.

Condensed Matter Theory 2
summer term 2019
Link zum LSF
9 participants
The exam will be on Wednesday the 24-th of July, from 9:15 to 12:00
Lectures are on Monday and Wednesday from 11:15 to 13:00 in philos.-weg 12/kHS Tutorials on Friday from 9:15 to 11:00 in Philos.-weg 19/Sr