Fakultät > Vorlesungen > Sommersemester 2025 > Condensed Matter Theory 2 (MVTheoCM2, MVSpec)

Condensed Matter Theory 2 (MVTheoCM2, MVSpec)

Sommersemester 2025
Dozent: Haverkort M, Schmidt R
19 Teilnehmer/innen
   <anmelden>
Condensed Matter Theory II:
The complexity of 1023 particles interacting with each other in a solid give 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. 
 
The lecture builds on the concepts discussed during the condensed matter physics I lecture series. We will use these to look at interacting many body systems. 
 
Background knowledge assumed to be present:
(you can find these topics in the lecture notes, look at youtube videos of the previous lectures or ask during the lectures for more information)
  • Second quantization
  • Tight binding representation of Hamiltonians and how to solve the band-structure (Fourier transform, crystal momentum)
  • Green's functions for non-interacting system and Dyson equation to calcualte impurity or surface states.
 
Concepts of many particle systems discused are:
  • Response functions.
  • The difference in response functions between interacting and non-interacting systems.
  • Green's functions and diagramatic expansions for interacting systems.

 

15.04 - 11:15-13:00 Lecture - Response theory (Chapter 12)
   
22.04 - 11:15-13:00 Lecture - Response theory
   
29.04 - 11:15-13:00 Lecture - Response theory
5.05 - 9:15 - 11:00 Tutorial - homework problem 1
6.05 - 11:15-13:00 Lecture - Electron Correlations (Chapter 13)
   
13.05 - 11:15-13:00 Lecture - Electron Correlations
19.05 - 9:15 - 11:00 Tutorial - homework problem 2
20.05 - 11:15-13:00 Lecture - Electron Correlations
   
27.05 - 11:15-13:00 Lecture - Electron Correlations
2.06 - 9:15 - 11:00 Tutorial - homework problem 3
3.06 - 11:15-13:00 Lecture - Matsubara formalism (new lecture notes)
   
10.06 - 11:15-13:00 Lecture - Matsubara formalism
16.06 - 9:15 - 11:00 Tutorial - homework problem 4
17.06 - 11:15-13:00 Lecture - Matsubara formalism
   
24.06 - 11:15-13:00 Lecture - Example BCS theory
30.06 - 9:15 - 11:00 Tutorial - homework problem 5
1.07 - 11:15-13:00 Lecture - Example Excitons
   
8.07 - 11:15-13:00 Lecture - Example Kondo physics
14.07 - 9:15 - 11:00 Tutorial - homework problem 6
15.07 - 11:15-13:00 Lecture - Free, time to study
21.07 - 9:15 - 11:00 Tutorial - open exam questions
22.07 - 11:15-13:00 Exam
   

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Condensed Matter Theory 2 (MVTheoCM2, MVSpec)
Sommersemester 2025
Haverkort M, Schmidt R
19 Teilnehmer/innen
   <anmelden>
Termine
  • The lectures are weekly on Tuesday from 11:15 to 13:00. The tutorials are biweekly on Monday from 9:15 to 11:00. Both at philosophenweg 19
  • The first lecture is on Tuesday 15.04
  • The first tutorial is on Monday 5.5
The lectures are in person. If you miss a lecture or if you want to refresch CMT 1 you can find a lecture series from 2020 on youtube.