Diploma Theses:

1. Axel Pelster:
   Study of the Special Properties of Lyapunov Functions in the Vicinity of Instabilities in Systems of Nonequilibrium;
   Diploma thesis (in German) with Prof. Dr. Arne Wunderlin, University of Stuttgart (1992)
   

2. Christian Simmendinger:
   Investigation of Instabilities in Nonlinear Systems With Time Delay;
   Diploma thesis (in German) with Prof. Dr. Arne Wunderlin, University of Stuttgart (1995)
   

3. Werner Kürzinger:
   Variational Perturbation Theory for the Quantum Mechanical Partition Function;
   Diploma thesis (in German) with Prof. Dr. Dr. h.c. mult. Hagen Kleinert, Free University of Berlin (1998)
   

4. Konstantin Glaum:
   Recursive Graphical Solution of Functional Differential Equations for Feynman Diagrams in Phi^4-Theory;
   Diploma thesis (in German) with Prof. Dr. Dr. h.c. mult. Hagen Kleinert, Free University of Berlin (2001)
   

5. Jens Dreger:
   Investigation of the Strong-Coupling Behaviour of the Fokker-Planck Equation With Anharmonic Drift;
   Diploma thesis (in German) with Prof. Dr. Bodo Hamprecht, Free University of Berlin (2002)
   

6. Florian Weißbach:
   Variational Perturbation Theory For Quantum Statistics --
   Introducing a Recursive Calculation of the Imaginary-Time Evolution Amplitude;
   Diploma thesis with Prof. Dr. Dr. h.c. mult. Hagen Kleinert, Free University of Berlin (2002)
   

7. Sebastian Schmidt:
   Finite-Temperature Field Theory of Ultracold Gases;
   Diploma thesis with Prof. Dr. Dr. h.c. mult. Hagen Kleinert, Free University of Berlin (2003)
   

8. Sebastian Brandt:
   Beyond Effective Potential via Variational Perturbation Theory;
   Diploma thesis with Prof. Dr. Dr. h.c. mult. Hagen Kleinert, Free University of Berlin (2004)
   

9. Sebastian Kling:
   Rotating Bose-Einstein Condensates;
   Diploma thesis with Prof. Dr. Dr. h.c. mult. Hagen Kleinert, Free University of Berlin (2005)
   

10. Thorsten Feldmann:
    Torsion, Dilaton and 2-Form Gauge Field of Space-Time;
    Diploma thesis (in German) with Prof. Dr. Dr. h.c. Robert Graham, University of Duisburg-Essen (2005)
    

11. Wieland Ronalter:
    Mean-Field Theory of Molecular Condensate;
    Diploma thesis (in German) with Prof. Dr. Dr. h.c. Robert Graham, University of Duisburg-Essen (2005)
    

12. Matthias Timmer:
    Ultracold Atomic Gases in Random Potentials;
    Diploma thesis (in German) with Prof. Dr. Dr. h.c. Robert Graham, University of Duisburg-Essen (2006)
    

13. Steffen Röthel:
    Ultracold Dilute Boson-Fermi-Mixtures;
    Diploma thesis with Prof. Dr. Dr. h.c. mult. Hagen Kleinert, Free University of Berlin (2006)
    

14. Parvis Soltan-Panahi:
    Thermodynamic Properties of F=1 Spinor Bose-Einstein Condensates;
    Diploma thesis with Prof. Dr. Dr. h.c. mult. Hagen Kleinert, Free University Berlin (2006)
    

15. Moritz Schütte:
    Bose-Einstein Condensates with Long-Range Interactions;
    Diploma thesis with Prof. Dr. Dr. h.c. mult. Hagen Kleinert, Free University of Berlin (2007)
    

16. Sonja Overesch:
    Variational Resummation of the Effective Potential in phi4-Theory;
    Diploma thesis with Prof. Dr. Dr. h.c. mult. Hagen Kleinert, Free University of Berlin (2007)
    

17. Alexander Hoffmann:
    Bosons in Optical Lattices;
    Diploma thesis (in German) with Prof. Dr. Dr. h.c. mult. Hagen Kleinert, Free University of Berlin (2007)
    

18. Ben Klünder:
    Superfluid Properties of Dirty Bosons;
    Diploma thesis with Prof. Dr. Dr. h.c. Robert Graham, University of Duisburg-Essen (2007)
    

19. Matthias Ohliger:
    Thermodynamic Properties of Spinor Bosons in Optical Lattices;
    Diploma thesis with Prof. Dr. Dr. h.c. mult. Hagen Kleinert, Free University of Berlin (2008)
    

20. Markus Düttmann:
    Variational Methods in Disorder Problems --
    Testing Approximation Techniques with and without Replicas on a Zero-Dimensional Disorder Model;
    Diploma thesis with Prof. Dr. Dr. h.c. mult. Hagen Kleinert, Free University of Berlin (2009)
    

21. Walja Korolevski:
    Bose-Einstein Condensation in Canonical Ensembles;
    Diploma thesis (in German) with Prof. Dr.Dr. h.c. mult. Hagen Kleinert, Free University of Berlin (2009)
    

22. Oliver Gabel:
    Non-Equilibrium Quantum Statistics of Trapped Ideal Bose Gases;
    Diploma thesis with Prof. Dr. Dr. h.c. mult. Hagen Kleinert, Free University of Berlin (2009)
    

23. Tobias Graß:
    Real-Time Ginzburg-Landau Theory for Bosonic Gases in Optical Lattices;
    Diploma thesis with Prof. Dr. Dr. h.c. mult. Hagen Kleinert, Free University of Berlin (2009)
    

24. Benno Liebchen:
    Statics und Dynamics of Ultracold Spinor Quantum Gases;
    Diploma thesis (in German) with Prof. Dr. Jürgen Bosse, Free University of Berlin (2010)
    

25. Mathias Hayn:
    On the Dissipative Dynamics of Ultracold Bosons in Optical Lattice;
    Diploma thesis (in German) with Priv.-Doz. Dr. Axel Pelster, Free University of Berlin (2010)
    

26. Christian Nietner:
    Quantum Phase Transition of Light in the Jaynes-Cummings Lattice;
    Diploma thesis with Priv.-Doz. Dr. Axel Pelster, Free University of Berlin (2010)
    

27. Falk Wächtler:
    Hartree-Fock Theory of Dipolar Fermi Gases;
    Diploma thesis with Prof. Dr. Martin Wilkens, University of Potsdam (2011)
    

28. Pascal Mattern:
    Bose-Einstein Condensates in Optical Lattices: Beyond the Bogoliubov Approximation;
    Diploma thesis with Prof. Dr. Dr. h.c. mult. Hagen Kleinert, Free University of Berlin (2012)
    

29. Max Lewandowski:
    Dissipative Bose-Einstein Condensates;
    Diploma thesis with Prof. Dr. Martin Wilkens, University of Potsdam (2012)
    

30. Tobias Rexin:
    Bose-Einstein Condensation of Photons;
    Diploma thesis with Prof. Dr. Martin Wilkens, University of Potsdam (2012)
    

31. Mathias May:
    Hard-Core Dipolar Bosons in Optical Lattices;
    Diploma thesis with Priv.-Doz. Dr. Axel Pelster, Free University of Berlin (2013)
    

32. Marek Schiffer:
    Ultracold Fermions in Two-Dimensional Planes with Dipolar Interaction;
    Diploma thesis with Priv.-Doz. Dr. Axel Pelster, Free University of Berlin (2013)
    

33. Martin Kübler:
    Improving Mean-Field Theory for Bosons in Optical Lattices via Degenerate Perturbation Theory;
    Diploma thesis with Prof. Dr. Sebastian Eggert, Technical University of Kaiserslautern (2016)
    

34. Martin Bonkhoff:
    Interacting Anyons in a One-Dimensional Optical Lattice;
    Diploma thesis with Prof. Dr. Sebastian Eggert, Technical University of Kaiserslautern (2016)
    

35. Sandro Gödtel:
    One-Dimensional Mathematical Model for Quantum Particles in Weakly Curved Optical Lattices;
    Diploma thesis with Prof. Dr. James Anglin, Technical University of Kaiserslautern (2017)
    

36. Christoph Dauer:
    Tuning of Scattering Properties by Periodic Modulation;
    Diploma thesis with Prof. Dr. Sebastian Eggert, Technical University of Kaiserslautern (2018)
    

37. Enrico Stein:
    Open-Dissipative Mean-Field Theory for Photon Bose-Einstein Condensates;
    Diploma thesis with Priv.-Doz. Dr. Axel Pelstert, Technical University of Kaiserslautern (2018)
    

38. Manuel Schmitt:
    Properties of Quantum Droplets in Dipolar Bose Gases;
    Diploma thesis (in German) with Priv.-Doz. Dr. Axel Pelstert, Technical University of Kaiserslautern (2019)
    

39. Joshua Krauß:
    Vortices in Photon Bose-Einstein Condensates;
    Diploma thesis with Priv.-Doz. Dr. Axel Pelstert, Rhineland-Palatinate Technical Univerisity Kaiserslautern-Landau (2023)